| සටභන් පොත | Note book |

Sinhala hangman

2010-06-10T07:01:00.000-07:00

Sinhala hangman;
A word game to improve sinhala word power
Source, Debina package and Windows package can be downloaded here:
http://code.google.com/p/hangman-si/downloads/list

xmms-1 is still the best

2010-06-08T23:21:00.000-07:00

xmms-1 is still can be found here

http://www.pvv.ntnu.no/~knuta/xmms/

eq-xmms (high quality equalizer) can be found here

http://sourceforge.net/projects/equ/files/

MySQL copy table from one database to another

2010-06-06T05:27:00.001-07:00

w/o data:

CREATE TABLE <db2>.<table2> LIKE <db1><table1>

with data:

CREATE TABLE <db2>.<table2> SELECT * FROM <db1><table1>

rename:

RENAME TABLE <table1> TO <table2>

Importing .bib file and using bibliography database in OpenOffice

2010-06-06T05:27:00.000-07:00

Importing .bib file and using bibliography database in OpenOffice

1) Download JabRef-2.6.jar from http://sourceforge.net/projects/jabref/

2) Start jabref with:

java -jar JabRef-2.6.jar

3) open .bib file and export it in to .ods format

From JabRef, export your database using the .ods format

4) Start OpenOffice.org Writer and Choose Edit -> Change database. Click on Select, and select your database exported to the .ods format.

5) Unfold the + located in front of the name of the imported database, then click on the displayed filename, and, finally, on the button Define.

6) Choose Tools -> Options -> OpenOffice.org Base -> Database. In this window, the database you just imported should be displayed. The default OOo bibliographic database should also be displayed (Bibliography).

7) Edit the Bibliography database, and alter its name, such as Bibliography-old (in fact, OpenOffice.org Writer does not allow selecting several bibliographic databases).

8) Select your bibliographic database, edit it, and rename it Bibliography (pay a special attention to the capital letter at the beginning of the name).

9) After these steps, your bibliographic database should be ready for use with OpenOffice.org. To check about it, choose Insert -> Index -> Bibliographic entry...: the list of the BibTeX keys should be displayed.

REF: http://jabref.sourceforge.net/help/OpenOfficeHelp.php

Send mail from gmail command line

2010-06-05T18:47:00.000-07:00

Download this python script, make it executable and copy to /usr/bin/

http://automationscripts.googlecode.com/svn/trunk/gmail.py

Now try gmail.py in your terminal

gmail.py -h for information

Credits to: http://www.h3manth.com/content/send-mail-gmail-programatically-python

Command line working with bluetooth

2010-06-03T20:07:00.000-07:00

Passing the key using a configuration is not likely to work with gnome.

This is the given procedure:

1) Create a config file at /etc/bluetooth/ called hcid.conf (I think it can be

any name but in the given directory) which will include:

options {

autoinit yes;

security user;

pairing multi;

#passkey "1234";

pin_helper /opt/pin_helper.sh;

}

2) /opt/pin_helper.sh code will just echo PIN:

#!/bin/bash

echo "PIN:1234"

3) Some people have used passkey option to pass the PIN

4) If bluetoothd is running (/etc/init.d/bluetooth [start|stop] ) it will

bring up the hardware when it plugged. else use:

hciconfig hci0 up ( like in ifconfig, check the device with hcitool dev)

5) then scan for the visible bluetooth hosts:

hcitool scan

6) Now using obexftp, files can be transfered (obexftpd should be running at

the other end: obexftpd -b -c /tmp/)

eg:

obexftp -b 00:16:20:60:7C:36 -c / -l

obexftp -b 00:16:20:60:7C:36 -c /Pictures -g picture1.jpg

obexftp -b 00:16:20:60:7C:36 -c /Pictures -p file.jpg

6) If obexftp require PIN and if you are running bluetoothd and bluetooth-

applet, applet will prompt for the key to be enterd.

7) If any one or all of bluetoothd and bluetooth-applet are not running we

have to start an agent manually:

bluetooth-agent

8) Then the obexftp can be used

Appendix:useful commands

Find services and related channels provided by the other end:

sdptool browse 2C:81:58:C1:CD:19

Ping the device(check for the link quality):

l2ping 2C:81:58:C1:CD:19

Create a connection for other purposes(audio,printing,modem...) instead of

file transfer:

rfcomm connect 0 00:1B:59:1F:93:7D 6

rfcomm connect /dev/rfcomm0)>

hidd --connect 00:1B:59:1F:93:7D

hcitool cc 00:1B:59:1F:93:7D

Light weight gnome mac os x leopard look & feel (for Debian sid and other compatible)

2010-06-02T19:59:00.000-07:00

Themes and fonts
imetal gtk+metacity theme
MacUltimate_Leopard icon theme
Lucida Grande, Bitstream Vera fonts

deb packages
xcompmgr
docky
cairo-clock
gnome-applet-globalmenu
REPO: deb http://ppa.launchpad.net/globalmenu-team/ppa/ubuntu/ lucid main
deskbar-applet

apt-get install  xcompmgr docky cairo-clock gnome-applet-globalmenu deskbar-applet

add xcompmgr docky cairo-clock to 'Startup Applications'

xcompmgr could start with:
xcompmgr -c -I 0.02 -O 0.02 -D 3 -f -F -r 15 -o .3 -l -18 -t -18
for more beauty...

add gnome-applet-globalmenu and deskbar-applet to your panel

Use GKrellKam to displays random web thumbnails on desktop

2010-03-05T19:45:00.000-08:00

We are going to use google search to select a category of random images to display through gkrellkam and set the selected image as the wallpaper

INSTALL:
apt-get install gkrellm gkrellkam curl gconf2 hindent gpicview imagemagick

CONFIGURATION:
1. Copy both scripts to opt as /opt/google_images.sh, /opt/local_images.sh make them executable ( chmod +x ) and download bellow image and save it as /opt/no_image.png. This image will show when there is a problem retrieving the images.

2. Start gkrellm and gkrellkam and right-click on the plugin... Configuration window of gkrellkam will occur.

3. Set the 'Image source' as following:
[path to google_images.sh] [search+string]::[site]
spaces of the search string should be combined with '+' sign
eg: /opt/google_images.sh "land::nationalgeographic.com"

4. In 'Options' tab set 'Path to image viewer program' similar to 'Image source' above. You can copy and paste it
[[path to google_images.sh] [search+string]::[site]

5. both [search+string] and [site] can not be null at the same time but other all combinations work but '::' separator should be there.
[search+string]::[site]
::[site]
[search+string]::
5. Thats it..

USING MOUSE KEYS:

middle-mouse-button :
Will cache the image thumb locations at first use and then it will go to next image before timer expires when you click

left-mouse-button :
Will download the image in real size and set as the desktop wallpaper if it is downloadable

right-mouse-button :
Will open the configuration dialog
google_images.sh

#!/bin/bash
# Copyright (C) 2008 Nayanajit Mahendra Laxaman mail: nmlaxaman@gmail.com

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.



if $(gconftool-2 -g /system/http_proxy/use_http_proxy)
then 
   export http_proxy="http://$(gconftool-2 -g /system/http_proxy/host):3128"
else
   unset http_proxy
   unset https_proxy
fi

function debug(){
   DEBUG=false

   if $DEBUG
   then
      echo "DEBUG:$@"
   fi
}

PARAMS=$1
#Custom url
#PARAMS="::http://ftp.gnome.org/pub/GNOME/teams/art.gnome.org/backgrounds/"
#PARAMS="wallpaper+road::"

WORKING='/tmp'
CATEGORY='';
SITE=''
NO_IMAGE="/opt/myapps/no_image.png"

if [[ $PARAMS != '' ]]
then
   CATEGORY=$( echo $PARAMS | awk -F '::' '{print $1}' )
   SITE=$( echo $PARAMS | awk -F '::' '{print $2}' )
   debug $SITE
fi

#if not accessible to google local images
ping -c 1 google.com 2>/dev/null >/dev/null
if [[ $? != 0 ]]
then
   /opt/myapps/local_images.sh $CATEGORY $2
   exit 0;
fi



DOWNLOAD_DIR="$WORKING/gkrellmkam_imgs_google";

CURRENT="$WORKING/next_img_google"
CATEGORY_D=""
if [[  $CATEGORY == "" ]]
then
   CATEGORY_D="DEFAULT"
else
   CATEGORY_D=$CATEGORY
fi
CURRENT_IMAGE_URL="$WORKING/$CATEGORY_D-current_image_url_google"
IMAGE_LIST="$WORKING/$CATEGORY_D-$SITE-img_list_google"
LOG="$WORKING/gkrellmkam_imgs_google_log"
COPY_DIR="$HOME/Pictures/google/$CATEGORY_D";

function urand(){
COUNT=$(($1+1))
while true
do
   FOUND=false
   RAND=$(($RANDOM%($COUNT)))
   for NO in $( cat $TMP 2>/dev/null )
   do
      if [[ $NO == $RAND ]]
      then
         FOUND=true
      fi
   done

   if ! $FOUND
   then
      echo $RAND
      echo $RAND >> $TMP
      break
   fi
done
}

function rand_file(){
TMP="/tmp/tn"
SC="/tmp/sc"
rm $TMP $SC 2>/dev/null
FILE=$1

COUNT=$( wc -l $FILE | awk '{print $1}' )
cat $FILE | while read line
do
   echo "LINE_ARRAY[$(urand $COUNT)]=\"$line\"" >> $SC
done 

source $SC
rm $FILE
for (( i=0; i<=${#LINE_ARRAY[@]}; i++ ))
do
   LINE=${LINE_ARRAY[$i]}
   if [[ $( echo $LINE | grep . ) != '' ]]
   then
      echo ${LINE_ARRAY[$i]} >> $FILE
   fi
done
}

function log(){
echo  $1 >> $LOG
}

function set_bg(){
XSPLASH_BG='/usr/share/images/xsplash/bg_2560x1600.jpg'
GDM_BG='/usr/share/backgrounds/Naranja.jpg'
if [[ $( file --mime-type "$@" | grep "image/" ) != '' ]]
then
   gpicview  "$@"&
   sleep 6
   zenity --question --text "Would you like to set it as the wallpaper, gdm background and, xsplash background?"  --cancel-label=NO;
   if [[ $? == 0 ]]
   then
      #Set user wallpaper
      gconftool-2 --type string --set /desktop/gnome/background/picture_filename "$@"
      if [[ -e $XSPLASH_BG ]] 
      then
         if [[ $( file --mime-type "$@" | grep jpeg ) != '' ]]
         then
            #Set xsplash background
            gksudo cp "$@" $XSPLASH_BG
            #gksudo cp "$@" $GDM_BG
         elif [[ -e /usr/bin/convert ]]
         then
            #Set xsplash background
            gksudo convert "$@" $XSPLASH_BG
            #gksudo convert "$@" $GDM_BG
         else
            zenity --error  --text="Can not set xsplash background and gdm background!"
         fi
      fi
      #Set gdm background
      sudo -u gdm gconftool-2 --type string --set /desktop/gnome/background/picture_filename "$@"
   fi
else
   zenity --error  --text="Image can not download\!"
fi
}


if [[ $# == 2 ]]
then

  if [[ ! -e "$COPY_DIR" ]]
  then
    mkdir -p  $COPY_DIR
  fi

  URL=$( cat $CURRENT_IMAGE_URL | awk -F 'http://' '{print "http://"$3 }')
  cd $DOWNLOAD_DIR
  FILE_O="$( basename $URL )"
  FILE="$(md5sum < $FILE_O | awk '{print$1}')-$FILE_O"
  if [[ -e "$FILE" ]]
  then
    if [[ -e "$COPY_DIR/$FILE_O" ]]
    then
      cp "$FILE" "$COPY_DIR/$(date +%S)-$FILE_O"
      $( set_bg "$COPY_DIR/$(date +%S)-$FILE_O" )
    else
      cp "$FILE" "$COPY_DIR/$FILE_O"
      $( set_bg "$COPY_DIR/$FILE_O" )
    fi
    exit 0;
  else
    wget -c  "$URL" -O "$FILE" 2>/dev/null
    if [[ -e  "$FILE" ]]
    then
      if [[ -e "$COPY_DIR/$FILE_O" ]]
      then
      cp "$FILE" "$COPY_DIR/$(date +%S)-$FILE_O"
       $( set_bg "$COPY_DIR/$(date +%S)-$FILE_O" )
      else
       cp "$FILE" "$COPY_DIR/$FILE_O"
       $( set_bg "$COPY_DIR/$FILE_O" )
      fi
    else
      gpicview  "$( basename $URL )" &
      $( set_bg "$( basename $URL )" )
    fi
  fi
  exit 0
fi



function gen_list(){
TMP_LIST="/tmp/tmp_list";
IMG_SIZE="xga" #2mp,
SAFE="active" #off
echo "" > $TMP_LIST
for start in 0 21 42 63 84 105
do
   debug "curl -A \"Mozilla/4.0\" \"http://images.google.com/images?q=$CATEGORY&imgsz=$IMG_SIZE&safe=$SAFE&start=$start&ndsp=21&as_sitesearch=$SITE\" | hindent -s 2>/dev/null| grep '/dev/null | hindent -s 2>/dev/null| grep '> $TMP_LIST 
done

if [[  $( cat  $TMP_LIST | wc -l ) != 0 ]]
then
  cp $TMP_LIST $IMAGE_LIST
  rand_file $IMAGE_LIST
  echo 1 > $CURRENT
fi
}

touch  $IMAGE_LIST  $CURRENT 2>/dev/null
mkdir  $DOWNLOAD_DIR 2>/dev/null

IMG_NO=$( cat  $CURRENT )
NO_OF_IMGS=$( cat $IMAGE_LIST | wc -l )

if [[ $NO_OF_IMGS == $IMG_NO || $NO_OF_IMGS == 0 ]]
then
  gen_list $CATEGORY
  echo 1 > $CURRENT
  IMG_NO=1
fi 

i=1;
if [[ $NO_OF_IMGS != 0 ]]
then
while read line 
do
  if [[ $i == $IMG_NO ]]
  then
    if [[ $NO_OF_IMGS == $IMG_NO ]]
    then
      echo 1 >  $CURRENT
    else
      echo $(($i+1)) >  $CURRENT
    fi
    cd $DOWNLOAD_DIR
    FILE_NAME="$( basename $line )"
    if [[ -e  "$DOWNLOAD_DIR/$FILE_NAME" ]]
    then
      echo  "$DOWNLOAD_DIR/$FILE_NAME"
    else
      wget -c "$line" -O "$FILE_NAME" >/dev/null 2>/dev/null
      #curl "$line" -o "$FILE_NAME" 2>/dev/null 
      echo  "$DOWNLOAD_DIR/$FILE_NAME"
    fi
    echo  "$line" > $CURRENT_IMAGE_URL
    break;
  fi
  i=$(($i+1));
done < $IMAGE_LIST
else
   echo $NO_IMAGE 
fi

local_images.sh

#!/bin/bash
# Copyright (C) 2008 Nayanajit Mahendra Laxaman mail: nmlaxaman@gmail.com

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.


if [[ $# -lt 1 ]]
then
   exit 0;
fi

CATEGORY=$1
WORKING="/tmp"
G_DIR="$HOME/Pictures/google"
CACHE_IMG_LIST="/tmp/cache_img_list_$CATEGORY"
THUMB_DIR="$WORKING/thumb_dir"
CURRENT="$WORKING/cache_current"
CURRENT_IMG_PATH="$WORKING/cache_current_img_path"
NO_IMAGE="/opt/myapps/no_image.png"


function urand(){
COUNT=$(($1+1))
while true
do
   FOUND=false
   RAND=$(($RANDOM%($COUNT)))
   for NO in $( cat $TMP 2>/dev/null )
   do
      if [[ $NO == $RAND ]]
      then
         FOUND=true
      fi
   done

   if ! $FOUND
   then
      echo $RAND
      echo $RAND >> $TMP
      break
   fi
done
}

function rand_file(){
TMP="/tmp/tn"
SC="/tmp/sc"
rm $TMP $SC 2>/dev/null
FILE=$1

COUNT=$( wc -l $FILE | awk '{print $1}' )
cat $FILE | while read line
do
   echo "LINE_ARRAY[$(urand $COUNT)]=\"$line\"" >> $SC
done 

source $SC
rm $FILE
for (( i=0; i<=${#LINE_ARRAY[@]}; i++ ))
do
   LINE=${LINE_ARRAY[$i]}
   if [[ $( echo $LINE | grep . ) != '' ]]
   then
      echo ${LINE_ARRAY[$i]} >> $FILE
   fi
done
}


function set_bg(){
XSPLASH_BG='/usr/share/images/xsplash/bg_2560x1600.jpg'
GDM_BG='/usr/share/backgrounds/Naranja.jpg'
if [[ $( file --mime-type "$@" | grep "image/" ) != '' ]]
then
   gpicview  "$@"&
   sleep 6
   zenity --question --text "Would you like to set it as the wallpaper, gdm background and, xsplash background?"  --cancel-label=NO;
   if [[ $? == 0 ]]
   then
      #Set user wallpaper
      gconftool-2 --type string --set /desktop/gnome/background/picture_filename "$@"
      if [[ -e $XSPLASH_BG ]] 
      then
         if [[ $( file --mime-type "$@" | grep jpeg ) != '' ]]
         then
            #Set xsplash background
            gksudo cp "$@" $XSPLASH_BG
            #gksudo cp "$@" $GDM_BG
         elif [[ -e /usr/bin/convert ]]
         then
            #Set xsplash background
            gksudo convert "$@" $XSPLASH_BG
            #gksudo convert "$@" $GDM_BG
         else
            zenity --error  --text="Can not set xsplash background and gdm background!"
         fi
      fi
      #Set gdm background
      sudo -u gdm gconftool-2 --type string --set /desktop/gnome/background/picture_filename "$@"
   fi
else
   zenity --error  --text="Image can not download\!"
fi
}

if [[ $# == 2 ]]
then
   #gpicview  "$( cat $CURRENT_IMG_PATH )" &
   set_bg  $( cat $CURRENT_IMG_PATH )
   exit 0;
fi

touch  $CACHE_IMG_LIST  $CURRENT 2>/dev/null
mkdir  $THUMB_DIR 2>/dev/null

IMG_NO=$( cat  $CURRENT )
NO_OF_IMGS=$( cat $CACHE_IMG_LIST | wc -l )

if [[ $NO_OF_IMGS == $IMG_NO || $NO_OF_IMGS == 0 ]]
then
   find -L $G_DIR | grep -e $CATEGORY -e '\.'...*$ > $CACHE_IMG_LIST
   rand_file $CACHE_IMG_LIST
   echo 1 > $CURRENT
   IMG_NO=1
fi 

i=1;
if [[ $NO_OF_IMGS != 0 ]]
then
while read line 
do
  if [[ $i == $IMG_NO ]]
  then
    if [[ $NO_OF_IMGS == $IMG_NO ]]
    then
      echo 1 >  $CURRENT
    else
      echo $(($i+1)) >  $CURRENT
    fi
    cd $THUMB_DIR
    FILE_NAME="$( basename $line )"
    if [[ -e "$THUMB_DIR/$FILE_NAME" ]]
    then
      echo "$THUMB_DIR/$FILE_NAME"
    else
      convert -resize 150 "$line" "$THUMB_DIR/$FILE_NAME" 2>/dev/null
      echo "$THUMB_DIR/$FILE_NAME"
    fi
    echo "$line" > $CURRENT_IMG_PATH
    break;
  fi
  i=$(($i+1));
done < $CACHE_IMG_LIST
else
   echo $NO_IMAGE
fi

wbar theme manager

2009-11-11T01:35:00.000-08:00

1. Set DEFAULT_THEME name in script which is a link to an available theme
2. Set TEMPLATE theme in script which should be a working set of icons correspondent with your .wbar configuration file
3. /usr/share/wbar/iconpack directory should be writable by you or you have to run this script as root (sudo)
4. To add new theme select NEW_THEME item at the top of the list in zenity wndow
5. To reset the themes after changing .wbar select RESET_THEME item of the list window


#!/bin/bash
# Copyright (C) 2008 Nayanajit Mahendra Laxaman mail: nmlaxaman@gmail.com

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.

WBAR_THEME_ROOT="/usr/share/wbar/iconpack"
DEFAULT_THEME="dreamdock"
TEMPLATE="$WBAR_THEME_ROOT/dream"
THEME_ROOT="/usr/share/icons"

ICONS=$( cat ~/.wbar | grep i: | awk '{printf $2" "}' | uniq )
N_ICONS=$(cat ~/.wbar | grep i: |wc -l)
EPOCH=$((100/$N_ICONS))
PROGRESS=0
DEFAULE="gnome"

THEME=''

function select_theme(){
THEMES=$(ls $WBAR_THEME_ROOT | grep -v -e $DEFAULT_THEME -e $TEMPLATE |  awk '{printf " FALSE "$1}')
NEW_THEME=$(zenity --width=300 --height=270  --list --radiolist  --column "Select" --column "Theme" TRUE NEW_THEME FALSE RESET_THEMES `echo $THEMES` );
echo $NEW_THEME;
}

function new_theme_select(){
  cd $THEME_ROOT
  NEW_THEME=$( zenity --file-selection --directory $THEME_ROOT --title="Choose an icon theme from /usr/share/icons/" )
  NEW_THEME=$( basename $NEW_THEME )
  if [ ! -z "$NEW_THEME" ]   2> /dev/null                  
  then                                                   

  if [[ -e $THEME_ROOT/$NEW_THEME ]]
  then
     echo $NEW_THEME
  else
     zenity --warning --text="Theme not found "
     exit 1;
  fi
  else
     zenity --warning --text="No theme given "
     exit 1;
  fi
}


function generate_theme(){
mkdir $WBAR_THEME_ROOT/$THEME
cd $WBAR_THEME_ROOT/$THEME
for ICON in $ICONS
do

PROGRESS=$(($PROGRESS+$EPOCH))
echo  $PROGRESS

ICON=$( basename $ICON )

FILE=$( find $THEME_ROOT/$THEME -iname $ICON  | grep -i 'scalable' | head -1)

if [[ $FILE == '' ]]
then
   FILE=$( find $THEME_ROOT/$DEFAULT -iname $ICON  | grep -i 'scalable' | head -1)
fi

if [[ $FILE == '' ]]
then
   FILE=$TEMPLATE/$ICON 
fi
cp -L $FILE $ICON
done
}

THEME=$( select_theme )

if [[ $THEME == 'RESET_THEMES' ]]
then
N_THEMES=$( ls  $WBAR_THEME_ROOT | grep -v -e $DEFAULT_THEME -e $TEMPLATE | wc -l)
EPOCH=$((100/$N_THEMES))
PROGRESS=0

   for theme in $( ls  $WBAR_THEME_ROOT | grep -v -e $DEFAULT_THEME -e $TEMPLATE )
   do
      PROGRESS=$(($PROGRESS+$EPOCH))
      echo  $PROGRESS

      THEME=$theme
      generate_theme
   done | zenity --progress --title="Resetting wbar icon themes" --text="Be patient\nIt will take some time to reset icon themes..."  --auto-close

   exit 1;
fi

if [[ $THEME == 'NEW_THEME' ]]
then
   THEME=$( new_theme_select )
   if [[ $? == 0 ]]
   then
    generate_theme | zenity --progress --title="Generating wbar icon theme" --text="Be patient\nIt will take some time to generate icon theme..."  --auto-close
   fi
   exit 1;
fi

if [[ $THEME == '' ]]
then
   zenity --warning --text="Theme not changed"
   exit 1;
else
   cd $WBAR_THEME_ROOT
   rm $DEFAULT_THEME
   ln -s $THEME $DEFAULT_THEME
fi

Share your 3G/HSDPA connection with friends using simple Linux router/gateway

2009-11-06T18:13:00.000-08:00

1. Copy following script to a file (say router_man.sh )
2. Set your local interface and Internet interface in the script
3. Make the file executable (use chmod +x router_man.sh)
4. To start(add) the router
router_man.sh -a

To stop(delete) the router
router_man.sh -d

To see the information
router_man.sh -s

5. In your friends laptop set your local IP as the gateway(router)

thats all...

#!/bin/bash
# Copyright (C) 2008 Nayanajit Mahendra Laxaman mail: nmlaxaman@gmail.com

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.

INTERNET=ppp0
LOCAL=eth0
if [[ $1 == '-a' ]]
then
iptables --table nat -A POSTROUTING --out-interface $INTERNET -j MASQUERADE
iptables -A FORWARD --in-interface $LOCAL -j ACCEPT
echo 1 > /proc/sys/net/ipv4/ip_forward
elif [[ $1 == '-d' ]]
then
iptables --table nat -D POSTROUTING --out-interface $INTERNET -j MASQUERADE
iptables -D FORWARD --in-interface $LOCAL -j ACCEPT
echo 0 > /proc/sys/net/ipv4/ip_forward
elif [[ $1 == '-s' ]]
then
echo "==iptables=="
iptables -nL
iptables -t nat -nL
echo "==ip_forward=="
cat /proc/sys/net/ipv4/ip_forward
else
echo "Invalide param!"
echo "try -a for add or -d for delete -s for status"
fi

Setting up trac with svn in Debian

2009-08-17T18:47:00.000-07:00

Reference:
http://trac.edgewall.org/wiki/TracOnDebian

1) Installing trac and apache2 and svn
apt-get install trac apache2 libapache2-mod-wsgi subversion

2) Creating trac projecs
NOTE: here my_project is the project name

mkdir /var/lib/trac
trac-admin /var/lib/trac/my_project initenv

3) Testing trac
tracd --port 8000 /var/lib/trac/my_project
Then open with browser http://localhost:8000

4) Deploying project in web (apache)
trac-admin /var/lib/trac deploy /var/www/trac

5) Apache2 configuration for the project
Create a file /etc/apache2/sites-enabled/trac_svn and add following to that file

WSGIScriptAlias /trac /var/www/trac/my_project/cgi-bin/trac.wsgi

<Directory /var/www/trac/cgi-bin>
WSGIApplicationGroup %{GLOBAL}
Order deny,allow
Allow from all
</Directory>

6) Testing the depoyment
Open with browser http://localhost/trac/my_project

7) Setting up svn project
mkdir -p /var/lib/svn/my_project
svnadmin create /var/lib/svn/my_project

8)Adding Users (through apache digest authentication)
NOTE: Here user_name is your user name

i) Enabling digest auth module
cd /etc/apache2/mods-enabled
ln -s ../mods-available/auth_digest.load

ii) Adding user to htpassword file ( Use -c for the first time only)
htdigest -c /etc/trac/htpasswd my_project user_name

iii)Add following to /etc/apache2/sites-enabled/trac_svn

<Location "/trac/login">
AuthType Digest
AuthName "my_project"
AuthDigestDomain /trac/my_project
AuthUserFile /etc/trac/htpasswd
Require user user_name
</Location>

iv)Setting access level in trac
trac-admin /var/lib/trac permission add user_name TRAC_ADMIN
trac-admin /var/lib/trac permission list

9) Adding plugins to trac
download the file and remove the .zip extension and run
easy_install --always-unzip TracWebAdmin-0.1.2dev_r4240-py2.3.egg

Using msb430 devices with contiki-2.x

2009-08-13T08:43:00.000-07:00

Installing gcc-msb430:
Added following line to the file /etc/apt/sources.list
deb http://wyper.ca/debian i686/
Then run:
apt-get update
apt-get install binutils-msp430 gcc-msp430 msp430-libc msp430-jtag

-------------------------------------------------------------------
Burning apps:
Change ownership of /dev/parport0
chmod o+rw /dev/parport0
Compile and burn application
make TARGET=msb430 <appname>.u

Note: Here appname is your application name msb430 is the device
platform '.u' denote that it should be uploaded (burned) to the
device.

Parameters we can used for cooja in contiki-2.x

2009-07-25T05:51:00.000-07:00

Syntax:
java -jar cooja.jar [parameters]

Parameters:
-contiki=
Can provide custom contiki path instead of the default path which cooja is contained ( I guess )

-external_tools_config=
Can provide custom externel_tools file. The default file is contiki-2.x/tools/cooja/build/external_tools_linux.config

-quickstart=
Quickly start the simulator using the given config file.
The configuration file can be either a saved simulation (.csc) contiki build to target cooja (.cooja) or a contiki source file (.c)
( .csc .cooja .c )

-nogui=
Quickly starting a saved simulator(.csc), make targeted to cooja (.cooja) or contiki source file (.c) WITHOUT gui
( .csc, .cooja, .c )
Make sure at least one test editor is controlling the simulation

-applet
Load the applets given followed by following switches given bellow
    -web=
       web applet path
    -sky_firmware=
       sky firmware
    -esb_firmware=
       esb firmware
    -build=
       build path

How to acquire URLs of the packages from apt (Debian,Ubuntu)[updated]

2009-06-16T17:46:00.000-07:00

Following script will list the URLs of the packages and it's dependencies
1. copy it to apt_urls.sh
2. make it executable chmod +x apt_urls.sh
3. use it ./apt_urls.sh
eg:- ./apt_urls.sh mysql-server

CODE:


#!/bin/bash
if [[ $# = 0 ]]
then
   echo "Usage:"
   echo "$0 "
   exit 0
fi

DEPS="/tmp/deps.list"

function get_urls(){
if [[ $1 == 'upgrade' || $1 == 'dist-upgrade' ]]
then
  echo $( apt-get $1 -s | grep Inst | awk '{print $2}') > $DEPS
else
  echo $( apt-get install $1 -s | grep Inst | awk '{print $2}') > $DEPS
fi
}

function list_urls(){
for PKG in $( cat $DEPS )
do
  PKG_PATH=$( apt-cache show $PKG | grep Filename: | awk '{print $2}' );
  PKG_DIR=$( echo $PKG_PATH| awk -F '/' '{print $2}' );
  BASE_URL=$( grep ^deb /etc/apt/sources.list | grep $PKG_DIR | awk '{print $2}' );

  for URL in $BASE_URL 
  do
    echo $URL/$PKG_PATH
  done | sort | uniq
done
}


get_urls $1
list_urls

Enlightenment 17 in Arch Linux

2009-06-07T06:29:00.000-07:00

Its really cool fast and up-to-date...

ArchLinux: http://www.archlinux.org/
ArchLinux e17:http://wiki.archlinux.org/index.php/E17
enlightenment: http://www.enlightenment.org/
elive: http://www.elivecd.org/

Blue curl usplash and gfxboot themes

2009-05-16T16:16:00.000-07:00

I modified a usplash theme and a gfxboot theme with adding blue curl background and the debian logo

Blue curl usplash:

Blue cur gfxboot theme:

Both can download here

[solved] PROLINK PHS100 HSDPA workout for Debian lenny and Ubuntu intrepid

2009-04-28T21:59:00.000-07:00

* check wethre system is up-to-date ( apt-get update && apt-get upgrade)
1. wget http://www.draisberghof.de/usb_modeswitch/usb_modeswitch-0.9.7.tar.bz2
2. tar xjvf usb_modeswitch-0.9.7.tar.bz2 && cd usb_modeswitch-0.9.7 && make install
3. Edit /etc/usb_modeswitch.conf and add following section (similar to iCON 210 section) to end of the file

########################################################
# Option PROLINK PHS100
#
# Contributor: laxaman

DefaultVendor=  0x1e0e
DefaultProduct= 0xf000

TargetVendor=   0x1e0e
TargetProduct=  0x9000

# Not really necessary because IDs of target device are different
TargetClass=    0xff

MessageEndpoint=0x1
MessageContent="555342431234567800000000000006bd000000020000000000000000000000"

ResponseEndpoint=0x1

4. Create /usr/sbin/prolink_hsdpa.sh with the content given bellow and make it executable (chmod +x /usr/sbin/prolink_hsdpa.sh)

#!/bin/bash
# Copyright (C) 2008 Nayanajit Mahendra Laxaman mail: nmlaxaman@gmail.com

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.

PATH=/usr/bin:/bin:/usr/sbin:/sbin
modprobe -r usbserial
sleep 1
modprobe usbserial vendor=0x1e0e product=0x9000

5. Create /etc/udev/rules.d/45-prolink_hsdpa.rules with the content given bellow

# Copyright (C) 2008 Nayanajit Mahendra Laxaman mail: nmlaxaman@gmail.com

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.

ACTION=="add", SUBSYSTEMS=="scsi", DRIVERS=="sr", \
ATTR{manufacturer}=="PROLINK ", \
RUN:=""

SUBSYSTEM=="usb", SYSFS{idProduct}=="f000", SYSFS{idVendor}=="1e0e", \
RUN:="/usr/sbin/usb_modeswitch"

SUBSYSTEM=="usb", SYSFS{idProduct}=="9000", SYSFS{idVendor}=="1e0e", \
RUN:="/usr/sbin/prolink_hsdpa.sh"

6. Thats it now you can plug your PROLINK PHS100 hsdpa dongle you will see some devices in /dev/ such as ttyUSB0 ttyUSB1 ttyUSB2 ttyUSB3 ttyUSB3 will the working one for data connection

7. You can use wvdial to dial your connection. If you don't have wvdial then install it (apt-get install wvdial). copy following content to /etc/wvdial.conf and type wvdial in your terminal to connect.


[Dialer Defaults]
Modem = /dev/ttyUSB3
Baud = 1843200
Modem Type = Analog Modem
Init2 = ATZ
Init3 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
Init4 = AT+CGDCONT=1,"IP",""
Dial Command = ATDT
Phone = *99***1#
Username = ''
Password = ''
Stupid Mode = yes

Script to add applications to fvwm-crystal menu

2009-04-24T09:27:00.000-07:00

Following script will add applications to fvwm-crystal menu

Screenshot of fvwm-crystal:


#!/bin/bash
APP_BASE=/usr/share/fvwm-crystal/fvwm/Applications
#APP_BASE=~/.fvwm/Applications/

if [[ $1 == '' ]]
then
echo "Usage:"
echo "$0  [icon name]"
exit 0
fi


if [[ ! -e $APP_BASE  ]]
then
echo "Menu base does not exists!"
exit 0
#mkdir -p $APP_BASE
fi

MENUS=($( ls $APP_BASE ));
MENU=
APP=$1
APP_NAME=`basename $1`
ICON=$2
SCRIPT=

if [[ `which $APP` == '' &&  ! -e $APP ]]
then
echo "$APP does not exists!"
exit 0
fi

i=0
while true
do
[[ ${MENUS[$i]} == '' ]] && break;
echo "$i. ${MENUS[$i]}"
i=`expr $i + 1`
done

OPT=''
echo "Enter Menu number to insert item:"
read OPT
if [[ $OPT -lt $i &&  $OPT -ge 0 ]]
then
MENU=${MENUS[$OPT]}
else
echo "wrong"
fi

if [[ $2 == '' ]]
then
ICON=$APP_NAME
fi

SCRIPT="~$ICON~$APP_NAME"


ANS=""
echo "Menu item: $APP_BASE/$MENU/$SCRIPT"
echo "Continue creating menu item? [y/n]: "
read ANS
if [[ $ANS == 'y' ]]
then
if [[ -e $SCRIPT ]]
then
echo "Script exists!";
else
echo "#!/bin/sh
exec $APP \$@
" > $APP_BASE/$MENU/$SCRIPT
chmod +x $APP_BASE/$MENU/$SCRIPT
fi
else
echo "Not creating menu item!"
fi

Save the script in /usr/bin/fvwm-crystal-menu-gen.sh and make it executable (chmod +x /usr/bin/fvwm-crystal-menu-gen.sh). Use following sytax to add applications to menus

/usr/bin/fvwm_crystal_menu_gen.sh [icon name]

If the application is in PATH you don't have to enter absolute path as just give application name. If you want to acompany an icon with a different name input it in place [icon name]

Script to change icons in fvwm-crystal menus

2009-04-24T08:32:00.000-07:00

I'm using fvwm-crystle because it is:
1. light weight
2. eyecandy
3. user friendly
4. customizable
5. different

see the screenshot:

Script:


#!/bin/bash

if [[ $1 == '' ]]
then
echo "usage"
echo "$0  [comparable icon name]"
exit 0
fi

FVWM_ICON_PATH="/usr/share/fvwm-crystal/fvwm/icons/Default"
ICON_NAME=$1.png
ICON_PATH=""
ICON_PATH_ARR=""

if [[ $2 != '' ]]
then
#ICON_PATH=(`for icon in $( locate $2 | grep -e "\/$2.png" -e  "\/$2.jpg" -e  "\/$2.svg" ); do echo $icon; done`)
ICON_PATH_ARR=($( locate $2 | grep -e "\/$2.png" -e  "\/$2.jpg" -e  "\/$2.svg" ))
else
ICON_PATH_ARR=($( locate $1 | grep  -e "\/$1.png" -e  "\/$1.jpg" -e  "\/$1.svg" ))
fi

if [[  $ICON_PATH_ARR == '' ]]
then
echo "Icon not found!!"
exit 0
fi

i=0
while true
do
[[ ${ICON_PATH_ARR[$i]} == '' ]] && break;
echo "$i. ${ICON_PATH_ARR[$i]}"
i=`expr $i + 1`
done

OPT=''
echo "Enter icon number to convert:"
read OPT
if [[ $OPT -lt $i &&  $OPT -ge 0 ]]
then
ICON_PATH=${ICON_PATH_ARR[$OPT]}
else
echo "wrong"
fi

if [[  $ICON_PATH  != '' || $ICON_NAME  != '' ]]
then

ANS=""
echo "Icon destination: $ICON_PATH"
echo "Icon name: $ICON_NAME"
echo "Continue creating icons? [y/n]: "
read ANS
if [[ $ANS == 'y' ]]
then
#convert $ICON_PATH -resize 16 -format 'png' $FVWM_ICON_PATH/16x16/$ICON_NAME
convert $ICON_PATH -resize 22 -format 'png' $FVWM_ICON_PATH/22x22/apps/$ICON_NAME
convert $ICON_PATH -resize 32 -format 'png' $FVWM_ICON_PATH/32x32/apps/$ICON_NAME
convert $ICON_PATH -resize 48 -format 'png' $FVWM_ICON_PATH/48x48/apps/$ICON_NAME
else
echo "Icons not creating!!"
fi
else
echo "Icon Not found!!!"
fi

It is easy to add icons. Save the script to a file (/usr/bin/fvwm-crystal-change-icons.sh) and make it executable (chmod +x /usr/bin/fvwm-crystal-change-icons.sh ) and then type

/usr/bin/fvwm-crystal-change-icons.sh [comparable icon name]

Here is mandatory and and it is the name of the correspoding application. [comparable icon name] is compulsary, if icon with the given name is not available give the applicationn name as and also a comparable icon name

Multiseat for Dual headed(Multiple headed) grapic (VGA) version-0.3

2009-02-23T19:56:00.000-08:00

Here I have modified Multiseat setup for Dual-Headed graphic cards which will be now supports more seats!(tested for four seats). Please refer earlier post for more information on how to setup

/usr/bin/duautomseat:


#!/bin/bash
# Copyright (C) 2008 Nayanajit Mahendra Laxaman mail: nmlaxaman@gmail.com

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.

LOG=/var/log/duauto.log
SESSION=$(echo $1 | sed s/':'/''/)
SESSION_1=$(expr $SESSION - 2)
SCREEN=""
if [ $SESSION -gt 3 ]
then
export DISPLAY=:1
export XAUTHORITY="/var/lib/gdm/:1.Xauth"
SCREEN="1024x768@0+$(expr 1024 \* $( expr $SESSION_1 - 2))+0"
else
export DISPLAY=:0
export XAUTHORITY="/var/lib/gdm/:0.Xauth"
SCREEN="1024x768@0+$(expr 1024 \* $SESSION_1)+0"
fi
echo $SCREEN >> $LOG
echo $DISPLAY >> $LOG
echo $XAUTHORITY >> $LOG

PARAMS=$@
echo $PARAMS >> $LOG

keyboards=($(ls -l /dev/input/by-path/ | grep -event- | grep kbd | awk -F '../' {'print $2'}))
mouses=($(ls -l /dev/input/by-path/ | grep -event- | grep mouse | awk -F '../' {'print $2'}))
echo $keyboards >> $LOG
echo $mouses >> $LOG
#PARAMS="dpms -switchCmd echo -2button -nozap -br $PARAMS"
PARAMS="dpms  -nozap -br $PARAMS"
command="/usr/bin/Xephyr -ac -screen $SCREEN -keybd evdev,,device=/dev/input/${keyboards[$SESSION_1]},xkbrules=xorg,xkbmodel=evdev,xkblayout=us,CoreKeyboard -mouse evdev,,device=/dev/input/${mouses[$SESSION_1]},Emulate3Buttons=true,CorePointer $PARAMS"
echo $command  >> $LOG
echo '<<>>' >> $LOG
exec $command

Append following to /etc/gdm/Init/Default before exit 0


WIDTH=1024

export DISPLAY=:0
export XAUTHORITY="/var/lib/gdm/:0.Xauth"
COUNT0=$(xwininfo -root -children -display :0 | grep 'Xephyr' | wc -l)
export DISPLAY=:1
export XAUTHORITY="/var/lib/gdm/:1.Xauth"
COUNT1=$(xwininfo -root -children -display :1 | grep 'Xephyr' | wc -l)
LOG=/var/log/init.log
echo "COUNT0:"$COUNT0  >> $LOG
echo "COUNT1:"$COUNT1  >> $LOG

if [[ $COUNT1 != 0 ]]
then
export DISPLAY=:1
export XAUTHORITY="/var/lib/gdm/:1.Xauth"
echo "DISPLAY:"$DISPLAY  >> $LOG
echo "XAUTHORITY:"$XAUTHORITY  >> $LOG

XEID=$(xwininfo -root -children -display :1 | grep "Xephyr on :$( expr $COUNT1 + 3)" --max-count=1 | awk '{print $1}')
echo "XEID:"$XEID  >> $LOG
SHIFT=$(expr $WIDTH \* $(expr $COUNT1 - 1))
echo "int 1" >> $LOG
echo "SHIFT:"$SHIFT  >> $LOG
[[ $XEID != '' ]] && wmctrl -i -r $XEID -e 0,$SHIFT,0,-1,-1

elif [[ $COUNT0 != 0 ]]
then
export DISPLAY=:0
export XAUTHORITY="/var/lib/gdm/:0.Xauth"
echo "DISPLAY:"$DISPLAY  >> $LOG
echo "XAUTHORITY:"$XAUTHORITY  >> $LOG

XEID=$(xwininfo -root -children -display :0 | grep "Xephyr on :$(expr $COUNT0 + 1)" --max-count=1 | awk '{print $1}')
echo "XEID:"$XEID  >> $LOG
SHIFT=$(expr $WIDTH \* $(expr $COUNT0 - 1))
echo "int 2" >> $LOG
echo "SHIFT:"$SHIFT  >> $LOG
[[ $XEID != '' ]] && wmctrl -i -r $XEID -e 0,$SHIFT,0,-1,-1
fi

/etc/gdm/gdm.conf:


#
[servers]
0=Xephyr0
1=Xephyr1

2=Xephyr2
3=Xephyr3
4=Xephyr4
5=Xephyr5

[server-Xephyr0]
name=Xephyr0
command=/usr/bin/X -br -dpms -layout layout0 -novtswitch -sharevts
handled=false
flexible=false

[server-Xephyr1]
name=Xephyr1
command=/usr/bin/X -br -dpms -layout layout1 -novtswitch -sharevts
handled=false
flexible=false


[server-Xephyr2]
name=Xephyr2
command=/usr/bin/duautomseat
handled=true
flexible=false

[server-Xephyr3]
name=Xephyr3
command=/usr/bin/duautomseat
handled=true
flexible=false

[server-Xephyr4]
name=Xephyr4
command=/usr/bin/duautomseat
handled=true
flexible=false

[server-Xephyr5]
name=Xephyr5
command=/usr/bin/duautomseat
handled=true
flexible=false

[greeter]
GraphicalThemes=circles/:debian-moreblue/:happygnome/:happygnome-list
GraphicalThemeRand=true
GraphicalTheme=circles

/etc/X11/xorg.conf:


Section "InputDevice"
Identifier "Generic Keyboard"
Driver  "kbd"
Option  "XkbRules" "xorg"
Option  "XkbModel" "pc104"
Option  "XkbLayout" "us"
EndSection

Section "InputDevice"
Identifier "Configured Mouse"
Driver  "mouse"
EndSection

Section "Device"
Identifier "Configured Video Device0"
Driver  "nvidia"
Busid   "PCI:17:12:0"
Option   "NoInt10" "No"
Option  "Twinview" "true"
EndSection

Section "Device"
Identifier "Configured Video Device1"
Driver  "nvidia"
Busid   "PCI:17:10:0"
Option   "NoInt10" "No"
Option  "Twinview" "true"
EndSection


Section "Monitor"
Identifier "Configured Monitor0"
EndSection

Section "Monitor"
Identifier "Configured Monitor1"
EndSection


Section "Screen"
Identifier "Default Screen0"
Monitor  "Configured Monitor0"
Device  "Configured Video Device0"
 DefaultDepth    24
 Subsection      "Display"
  Viewport    0 0
         Depth   24
         Modes    "1024x768"
         Virtual 2048 768
 EndSubSection
EndSection

Section "Screen"
Identifier "Default Screen1"
Monitor  "Configured Monitor1"
Device  "Configured Video Device1"
 DefaultDepth    24
 Subsection      "Display"
  Viewport    0 0
         Depth   24
         Modes    "1024x768"
         Virtual 2048 768
 EndSubSection
EndSection

Section "ServerLayout"
Identifier  "layout0"
screen   "Default Screen0"  0 0
Inputdevice  "Generic Keyboard"
Inputdevice  "Configured Mouse"
EndSection

Section "ServerLayout"
Identifier  "layout1"
screen   "Default Screen1"  0 0
Inputdevice  "Generic Keyboard"
Inputdevice  "Configured Mouse"
EndSection




Section "ServerFlags"
#Option "DontZap"   "true"
#Option "DontVTSwitch"   "true"
EndSection

To find Busid for each Graphic card use;
lspci | grep -i vga | awk '{print $1}'

then convert the hex values in to decimal for example:

hex	decimal
11:0c:0	17:12:0

11 -> 17
0c -> 12
0 -> 0
.~

Multiseat for Dual headed(Multiple headed) grapic (VGA) version-0.2

2009-02-15T23:16:00.000-08:00

Here I have modified Multiseat setup for Dual-Headed graphic cards which will be now supports more seats!. Please refer earlier post for more information on how to setup

/usr/bin/duautomseat:


#!/bin/bash
# Copyright (C) 2008 Nayanajit Mahendra Laxaman mail: nmlaxaman@gmail.com

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.

LOG=/tmp/duauto.log
export DISPLAY=:0
export XAUTHORITY="/var/lib/gdm/:0.Xauth"
echo $DISPLAY >> $LOG
echo $XAUTHORITY >> $LOG

PARAMS=$@
echo $PARAMS >> $LOG

keyboards=($(ls -l /dev/input/by-path/ | grep -event- | grep kbd | awk -F '../' {'print $2'}))
mouses=($(ls -l /dev/input/by-path/ | grep -event- | grep mouse | awk -F '../' {'print $2'}))

#PARAMS="dpms -switchCmd echo -2button -nozap -br $PARAMS"
PARAMS="dpms  -nozap -br $PARAMS"
SESSION=$(echo $1 | sed s/':'/''/)
SESSION_1=$(expr $SESSION - 1)
SCREEN="1024x768@0+$(expr 1024 \* $SESSION_1)+0"
command="/usr/bin/Xephyr -ac :$SESSION -screen $SCREEN -keybd evdev,,device=/dev/input/${keyboards[$SESSION_1]},xkbrules=xorg,xkbmodel=evdev,xkblayout=us,CoreKeyboard -mouse evdev,,device=/dev/input/${mouses[$SESSION_1]},Emulate3Buttons=true,CorePointer $PARAMS"
echo $command >> $LOG
echo '<<>>' >> $LOG
#exec $command

Append following to /etc/gdm/Init/Default


export DISPLAY=:0
export XAUTHORITY="/var/lib/gdm/:0.Xauth"
WIDTH=1024
COUNT=$(xwininfo -root -children -display :0 | grep 'Xephyr on' | wc -l)
XEID=$(xwininfo -root -children -display :0 | grep "Xephyr on :$COUNT" --max-count=1 | awk '{print $1}')
SHIFT=$(expr $WIDTH \* $(expr $COUNT - 1))
[[ $XEID != '' ]] && wmctrl -i -r $XEID -e 0,$SHIFT,0,-1,-1

/etc/gdm/gdm.conf:


#
[servers]
0=Xephyr0
1=Xephyr1
2=Xephyr2
3=Xephyr3
.
.
.
N=XephyrN

[server-Xephyr0]
name=Xephyr0
command=/usr/bin/X -br -dpms -s 0
handled=false
flexible=false

[server-Xephyr1]
name=Xephyr1
command=/usr/bin/duautomseat
handled=true
flexible=false

[server-Xephyr2]
name=Xephyr2
command=/usr/bin/duautomseat
handled=true
flexible=false

[server-Xephyr3]
name=Xephyr3
command=/usr/bin/duautomseat
handled=true
flexible=false

.
.
.

[server-XephyrN]
name=XephyrN
command=/usr/bin/duautomseat
handled=true
flexible=false


[greeter]
#Greeter=/usr/bin/loginduautomseat
GraphicalThemes=circles/:debian-moreblue/:happygnome/:happygnome-list
GraphicalThemeRand=true
GraphicalTheme=circles

kannel send sms to specific port

2009-02-11T09:44:00.000-08:00

To send sms to a specific port number ( eg: port in your j2me application ) you have to add following extra parameter to kannel send sms url

udh=

which will specify the User Data Header of the sms. For example following url will send the sms to port 6579

http://127.0.0.1:13013/cgi-bin/sendsms?username=[kannel user]&password=[kannel passwd]&to=[to phone number]&text=[message text]&udh=%06%05%04%19%B3

As you can see udh is a url-encoded string and it have a standard format as follows;

[how long the UDH is] [the format used to specify ports numbers] [the port number length] [destination port number] [source port number]

As a practical example, say I want to create a UDH to send a sms to port 2948, the UDH will be:

06 05 04 0B 84 23 F0 -> 06%05%04%0B%84%23%F0

where:

* 06 means "hey read the following 6 bytes"
* 05 is the format for numbers, in this case hexadecimal numbers
* 04 will tell the UDH that each port is represented using 4 character
* 0B84 is the destination port in hexadecimal, 2948 (decimal representation)
* 23F0 is the source port in hexadecimal, 9200 (decimal representation) or 23F0 (hexadecimal representation).

You have to keep in mind that after adding udh to the url, sms will be transfred as a binary messaage.

Ref:http://mobiforge.com/developing/story/binary-sms-sending-rich-content-devices-using-sms

kannel sms delivery report workout

2009-02-11T08:53:00.000-08:00

1) Add one of the following options to core group of kannel configuration. If you use mysql as dlr-storage you have to configure two more groups to associate mysql with kannel. If you use dlr-storage=internal skip step 2. If you use dlr-storage=internal the data is not tangible according to my knowledge. Also keep in mind that there are other parameters for dlr-storage which we can use to connect with other databases like postgresql

dlr-storage = internal
dlr-storage = mysql

2) If you use mysql add following two groups to kannel.conf (or to separate file and include that file). Put your database username and password to the place of [db user] and [db passwd] . Group dlr-db uses to specify the table and map the feilds together. if you configure for mysql, the message will be temporarily stored in the table until it reaches the destination.


group = mysql-connection
id = mydlr             
host = localhost       
username = [db user]         
password = [db passwd]
database = kannel      
max-connections = 1    
               
group = dlr-db         
id = mydlr             
table = dlr            
field-smsc = smsc      
field-timestamp = ts   
field-destination = destination
field-source = source  
field-service = service
field-url = url        
field-mask = mask      
field-status = status  
field-boxc-id = boxc

Thats all for kannel.conf...

3) Now you have to introduce following extra parameters to your kannel send sms url

dlr-mask=
dlr-url=

dlr-mask specifies the types of reports which kannel should generate. dlr-url specifies the url which will be called when the delivery report is received. For dlr-mask you can use one of the following mask numbers or any combination of them.

1: delivery success

2: delivery failure

4: message buffered

8: smsc submit

16: smsc reject

If you want multiple report types, you simply add the values together. For dlr-url you have to provide a url-encoded url for example
url:
http://localhost/sms/inc/deliveryReport.php?user=john&passwd=1234&type=%d&receiver=%p&reply=%A&time=%t&usr=%n&message=%b
urlencoded url:
http%3A%2F%2Flocalhost%2Fsms%2Finc%2FdeliveryReport.php%3Fuser%3Djohn%26passwd%3D1234%26type%3D%25d%26receiver%3D%25p%26reply%3D%25A%26time%3D%25t%26usr%3D%25n%26message%3D%25b

If you use php to interact with kannel you can easily generate urlencoded url using urlencode() function.

finally the resulting url is like this
http://localhost:13013/cgi-bin/sendsms?username=[kannel user]&password=[kannel passwd]&to=[to phone number]&text=[message text]&dlr-url=http%3A%2F%2Flocalhost%2Fsms%2Finc%2FdeliveryReport.php%3Fuser%3Djohn%26passwd%3D1234%26type%3D%25d%26receiver%3D%25p%26reply%3D%25A%26time%3D%25t%26usr%3D%25n%26message%3D%25b&dlr-mask=7

here I have used dlr-mask=7 so it will report following three types;
1: delivery success

2: delivery failure

4: message buffered

Acer aspire 2930 Ubuntu sond card problems (mic,jak control) solved oss-linux

2009-01-17T21:58:00.000-08:00

Dictionary for English -Sinhala and Sinhala-Engliish for stardict

2009-01-16T17:20:00.000-08:00

Stardict is both static and scanning dictionary. Nice thing of stardict is, it does not depend on the application which the text is contained (eg: ensitip works only in firefox).
1) install stardict
apt-get install stardict
2) setting up Sinhala-English English-Sinhala dictionary
download the dictionary file from www.sinhalenfoss.org.
extract the compressed file to /usr/share/stardict/dic
tar -xzvf sinhala-stardict-120908.tar.gz -C /usr/share/stardict/dic
3) configurations
stardict will be available in 'Accessories' sub-menu start it.
Click the small button at bottom right corner of the dictionary window.
Chose a suitable key for scan modification there. otherwise stardict will scan all the time when you select a text.
4) You can also download many other dictionaries at http://stardict.sourceforge.net/Dictionaries.php,http://stardict.sourceforge.net/Dictionaries_dictd-www.dict.org.php
Oxford Advanced Learner's Dictionary is a good one for English-English.

Ubuntu Read-out-loud your documents for you

2009-01-16T17:01:00.000-08:00

I found two applications which we can use to read our document out loud for us. If you are bored with reading all day give some times to these applications to read the document out loud for you.
1) Adobe acrobat reader
Installation:
include following entry in /etc/apt/sources.list
deb http://packages.medibuntu.org/ intrepid free non-free
Then execute:
apt-get update
apt-get install acroread acroread-plugin-speech
using:
Open a pdf file with acroread and go to menu View>Read Out Loud >Activate Read Out Loud
then again go to menu View>Read Out Loud >Read This Page Only or the other opttions

2)Firefox
With these plugins firefox will read the web page out loud for you
i) fire vox
ii)clickspeak

SMS gateway with kannel and your mobile phone (Ubuntu intrepid)

2009-01-11T07:09:00.001-08:00

Kannel is a gateway for connecting WAP (Wireless Application Protocol) phones to the Internet. It also works as an SMS gateway, for providing SMS based services for GSM phones. Bellow is my configuration of kannel as a SMS-gateway

1) apt-get install kannel
2)copy /usr/share/doc/kannel/examples/modems.conf to /etc/kannel/ to include in kannel.conf
3)Backup /etc/kannel/kannel.conf ( mv /etc/kannel/kannel.conf /etc/kannel/kannel.conf.bak) and create a new file /etc/kannel/kannel.conf with following configuration:


group = core
admin-port = 13000
smsbox-port = 13001
admin-password = bar
log-file = "/var/log/kannel/kannel.log"
log-level = 0
box-deny-ip = "*.*.*.*"
box-allow-ip = "127.0.0.1"


group = smsc
smsc = at
modemtype = auto
device=/dev/ttyUSB1
my-number = 
connect-allow-ip = 127.0.0.1
log-level = 0


group = smsbox
bearerbox-host = 127.0.0.1
sendsms-port = 13013
global-sender = 
log-level = 0


group = sendsms-user
username = kan
password = abc
concatenation= true
max-messages = 10


group = sms-service
keyword =
keyword-regex = .*
catch-all = yes
max-messages = 0
get-url = http://localhost/sms/inc/getsms.php?user=john&passwd=1234&mobile=%p&text=%a

include = "/etc/kannel/modems.conf"

4) in above configuration put your phone number in the place of and change the password and username under group = sendsms-user
5) Change device=/dev/ttyUSB1 to your device (eg: /dev/ttyS0, /dev/ttyACM0 ). I'm using huawei E220 in my case and using /dev/ttyUSB1 for sms-gateway and to access Internet I use /dev/ttyUSB0.
6) Now configuration is almost done... now you can test your configuration with starting the gateway with following commands. It will return the errors to the terminal.
bearerbox -v 0 smskannel.conf &
smsbox -v 0 smskannel.conf &

7) I you have problem with opening your device (eg: /dev/ttyUSB1) try changing the permissions for that device with chmod a+rw /dev/ttyUSB1
8) By default kannel will start at the boot time, so it is better you have plugged your device while booting otherwise kannel will try to probe the device continuously until you plug the device or stop kannel (to stop use '/etc/init.d/kannel stop' ).
9) kannel is configured to start as WAPBOX by default... to make it start as a SMSBOX (sms-gateway), edit /etc/default/kannel and put 'START_SMSBOX=1' instead of 'START_WAPBOX=1'
10) To send sms using terminal use following command:
lynx -dump "http://127.0.0.1:13013/cgi-bin/sendsms?username=kan&password=abc&to=[recipient no]&text=[text]"
* It is easy to write an application with php like serverside language and provide a web-gui for kannel. You can find a simple web front end for kannel here.

following link will provide brief descriptions for kannel.conf settings;
http://swik.net/User:marc/Chipmunk+Ninja+Technical+Articles/Setting+up,+Configuring,+and+Using+Kannel+to+send%2Freceive+SMS+messages/3e0s

Usefull links:
http://www.kannel.org/

http://kannel.jizz.gr/

User's guid

Multiseat for Dual headed(Multiple headed) grapic (VGA) cards version-0.1

2009-01-09T17:44:00.000-08:00

I have tested this method only with Debian lenny and still using without any problem

1) Copy following script to /usr/bin/duautomseat and make it executable with chmod +x /usr/bin/duautomseat


#!/bin/bash
# Copyright (C) 2008 Nayanajit Mahendra Laxaman mail: nmlaxaman@gmail.com

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#input format
#:1 -auth /var/lib/gdm/:1.Xauth -nolisten tcp vt8

LOG=/tmp/duauto.log
export DISPLAY=:0
export XAUTHORITY="/var/lib/gdm/:0.Xauth"
echo $DISPLAY >> $LOG
echo $XAUTHORITY >> $LOG

PARAMS=$@
echo $PARAMS >> $LOG

keyboards=( echo $(ls -l /dev/input/by-path/ | grep -event- | grep kbd | awk -F '../' {'print $2'}) )
mouses=( echo $(ls -l /dev/input/by-path/ | grep -event- | grep mouse | awk -F '../' {'print $2'}) )

pkeyboards=($(ls /dev/input/by-path/ | grep -event- | grep kbd ))
pmouses=($(ls /dev/input/by-path/ | grep -event- | grep mouse ))

keyboards=$pkeyboards
mouses=$pmouses


kbd1=${keyboards[1]}
kbd2=${keyboards[2]}

mouse1=${mouses[1]}
mouse2=${mouses[2]}

screen1="1024x768@0+0+0"
screen2="1024x768@0+1024+0"

ac1=1
ac2=2

#PARAMS="dpms -switchCmd echo -2button -nozap -br $PARAMS"
PARAMS="dpms  -nozap -br $PARAMS"

command=

if [[ $1 == :1 ]]; then
command="/usr/bin/Xephyr -ac :$ac1 -screen $screen1 -keybd evdev,,device=/dev/input/$kbd1,xkbrules=xorg,xkbmodel=evdev,xkblayout=us,CoreKeyboard -mouse evdev,,device=/dev/input/$mouse1,Emulate3Buttons=true,CorePointer $PARAMS"
fi

if [[ $1 == :2 ]]; then
command="/usr/bin/Xephyr -ac :$ac2 -screen $screen2 -keybd evdev,,device=/dev/input/$kbd2,xkbrules=xorg,xkbmodel=evdev,xkblayout=us,CoreKeyboard -mouse evdev,,device=/dev/input/$mouse2,Emulate3Buttons=true,CorePointer $PARAMS"
fi

echo $command >> $LOG
echo '<<>>' >> $LOG
exec $command

2) Backup your /etc/gdm/gdm.conf with mv /etc/gdm/gdm.conf /etc/gdm/gdm.conf.bak and create a new will as /etc/gdm/gdm.conf with following content in it


[servers]
0=Xephyr0
1=Xephyr1
2=Xephyr2

[server-Xephyr0]
name=Xephyr0
command=/usr/bin/X -br -dpms -s 0
handled=false
flexible=false

[server-Xephyr1]
name=Xephyr1
#default params :1 -auth /var/lib/gdm/:1.Xauth -nolisten tcp vt8
command=/usr/bin/duautomseat
handled=true
flexible=false

[server-Xephyr2]
name=Xephyr2
#default params :2 -auth /var/lib/gdm/:2.Xauth -nolisten tcp vt8
command=/usr/bin/duautomseat
handled=true
flexible=false

[greeter]
#Greeter=/usr/bin/loginduautomseat
GraphicalThemes=circles/:debian-moreblue/:happygnome/:happygnome-list
GraphicalThemeRand=true
GraphicalTheme=circles

3) Install wmctrl and xephyr with apt-get install xserver-xephyr wmctrl and modify /etc/gdm/Init/Default script with appending following code snippets before exit 0 line at the bottom


export DISPLAY=:0
export XAUTHORITY="/var/lib/gdm/:0.Xauth"
XEID=$( xwininfo -root -children -display :0 | grep 'Xephyr on :1' --max-count=1 | awk '{print $1}' )
[[ $XEID != '' ]] && wmctrl -i -r $XEID -e 0,1024,0,-1,-1

4) Configuring /etc/X11/xorg.conf; bellow is my configuration for my nVidia GeForce 6200 graphic card:



Section "InputDevice"
Identifier "Generic Keyboard"
Driver  "kbd"
Option  "XkbRules" "xorg"
Option  "XkbModel" "pc104"
Option  "XkbLayout" "us"
EndSection

Section "InputDevice"
Identifier "Configured Mouse"
Driver  "mouse"
EndSection

Section "Device"
Identifier "Configured Video Device"
Driver  "nvidia"
Option  "Twinview" "true"
EndSection

Section "Monitor"
Identifier "Configured Monitor"
EndSection

Section "Screen"
Identifier "Default Screen"
Monitor  "Configured Monitor"
      DefaultDepth    24
      Subsection      "Display"
              Depth   24
              Modes    "1024x768"
              Virtual 2048 768
      EndSubSection
EndSection

Section "ServerFlags"
Option "DontZap"   "true"
# Option "DontVTSwitch"   "true"
# Option "HandleSpecialKeys"  "Always"
# Option "BlankTime"   "0"
# Option "StandbyTime"   "0"
# Option "SuspendTime"   "0"
# Option "OffTime"   "0"
# Option "AllowMouseOpenFail"  "true"
EndSection

* Since Screen resolution is hard-corded in duautomseat and /etc/gdm/Init/Deafault code snippets, you have to change them according to your screen resolution.

* Now logout and see...

Cheers !!!

Ref:http://netpatia.blogspot.com/2008/02/multiseat-computer-with-ubuntu-804.html

Nesc syntax colouring for VIM

2009-01-02T19:39:00.000-08:00

Follow the guidelines given in bellow link

http://www.vim.org/scripts/script.php?script_id=1847

See the result:

it is cool

Fingerprint authentication for Ubuntu intrepid Linux in acer aspire 2930

2009-01-02T18:55:00.000-08:00

1) install the required packages

apt-get install libpam-fprint fprint-demo

2) restart the machine

3) Run 'fprint_demo' and press 'Enroll' button in front of 'Right index finger' sweep your right index finger two three times to get a better scan then press ok and store the print.

4) Go to 'identify' tab of 'fprint_demo' check weather it can identify you finger and remember the starting pont, motion, and end point of you finger when it identifies you.

5) Edit /etc/pam.d/common-auth and include bellow line on top of all the active entris in the file

'auth sufficient pam_fprint.so'

6) Thats it, now logout and login to test the settings. In the login page first you have to enter your username then it will hold on untill you sweep your finger and will give you number of tries like 5. If you failed to sweep your finger in correct wey it will prompt for password.

7) To aunticate sudoers with fingerprint you can add bellow entry to the top of the 'session' entries in /etc/pam.d/sudo

'session sufficient pam_fprint.so'

8) Now try to execute a command in your terminal with sudo it will ask for the finger sweep and if you fail to sweep in correct wey it will prompt for password

good luck!

Installing TinyOS-2.x in Ubuntu intrepid (8.10)

2009-01-01T21:20:00.000-08:00

1) add bellow repository to your /etc/apt/sources.list though it is for hardy, it is working for intrepid also

deb http://tinyos.stanford.edu/tinyos/dists/ubuntu hardy main

2) with following commands you can update the apt-cache and search the required packages thin you can install the required version and all.

apt-get update
apt-cache search tinyos
apt-get install tinyos-2.1.0

3) then install python development package (headers)

apt-get install python-dev

4) Edit /opt/tinyos-2.1.0/tinyos.sh and change the CLASSPATH env-variable as bellow

CLASSPATH=$CLASSPATH:$TOSROOT/support/sdk/java/tinyos.jar:.

4) Import /opt/tinyos-2.1.0/tinyos.sh in your .bashrc; include bellow code snippet to ~/.bashrc

if [ -f /opt/tinyos-2.1.0/tinyos.sh ] ; then
. /opt/tinyos-2.1.0/tinyos.sh
fi

5) Now execut bash again or restart the terminal and chech your enviorenment with bellow command. It will check the enviorenment and report you the status. (Ignore the WORNING returned due to graphvis version)

tos-check-env

6) Lets compile the first application

cd $TOSROOT/apps/Blink
make micaz

for simulator

make micaz sim

have fun!~

anyRemote: java mobile phone remote control for Linux

2009-01-01T05:59:00.000-08:00

Recently I found a very useful tool called anyRemote which converts a mobile phone with IR or Bluetooth in to a remote control for a Linux box. It is an opensource Sourceforge project also privides a repository for ubuntu
I was searching a workaround to use remote control facility of my Sony Ericsson w700i phone with my Ubuntu intrepid. Then I found this tool which supports many different types of phones and it is not dependent on whether you have a remote control with your phone.
With following the documentation I was easilly able to configure the setup and now I can control my audacious player remotely.
It provides facility to song control as well as volumen control and viewing the play list.

Install gnome-globalmenu 0.7 in Ubuntu intrepid (8.10)

2008-12-28T08:15:00.000-08:00

gnome-globalmenu 0.7.0 is more customizable and have fulfiled most of the expectations of the os x lovers, see screen shot bellow.

apt-get install alien
wget http://gnome2-globalmenu.googlecode.com/files/gnome-globalmenu-0.7.0.svn1861-1.fc10.i386.rpm
wget http://gnome2-globalmenu.googlecode.com/files/vala-0.5.1-1.fc10.src.rpm
alien -d --scripts vala-0.5.1-1.fc10.src.rpm gnome-globalmenu-0.7.0.svn1861-1.fc10.i386.rpm
dpkg -i vala_0.5.1-2_i386.deb gnome-globalmenu_0.7.0.svn1861-2_i386.deb
Configuring gnome environment to collaborate with globalmenu edit ~/.gnomerc ro /etc/profile and include following configuration to it. You have to keep at least 'export GTK_MODULES=globalmenu-gnome' line uncommented to enable globalmenu. Other options can check if you want.


# Uncomment to load the GTK module

export GTK_MODULES=globalmenu-gnome

# Uncomment to tell the GTK module to open a Gtk

# TreeView for all menus in the application you start.

# export GNOMENU_FUN=1

# Uncomment to disable global menu.

# export GNOMENU_DISABLED=1

# Uncomment to print a lot of debugging messages

# export GNOMENU_VERBOSE=1

# Uncomment to save the debugging messages to the given file.

# export GNOMENU_LOG_FILE=/tmp/gnomenu.log

# uncomment to disable the plugin for specific programs.

# export GTK_MENUBAR_NO_MAC="fast-user-switch-applet"

That's it. now logout and login and add add 'global menu panel applet' to the panel

install Ubuntu 8.10 on AD Notebook (low performance notebook)

2008-12-21T05:04:00.000-08:00

AD notebooks is very low cost low performance notebook in Sri Lanka similar product can find in this link called 'twinhead', which have the same configuration given bellow.
AMD LX-800
8″ TFT Screen @ 800×480 resolution (working for 1024×600 also)
0.9kg
4-in-1 Card Reader
Wireless LAN 802.11b/g
512MM RAM
1.8″ 20GB HDD
LAN Slot RJ-45
USB Port x2, VGA Port x1
Polymer Battery
Dimension: 225×161x35mm (updated on 27 Mar 2008, previously reported as 250×188x36)

Ubuntu Installation HowTo:

You can install using Ubuntu live cd with external optical driver with normal steps. Since this is a very low performance notebook, it need some workout to make Ubuntu usable.

1. Display(Xserver) configuration:
go to single user mode(maintanance mode) and edit /etc/X11/xorg.conf. Bellow is my configuration


Section "InputDevice"
Identifier "Generic Keyboard"
Driver "kbd"
Option "XkbRules" "xorg"
Option "XkbModel" "pc105"
Option "XkbLayout" "us"
EndSection

Section "InputDevice"
Identifier "Configured Mouse"
Driver "mouse"
EndSection

Section "Device"
Identifier "Configured Video Device"
Boardname "vesa"
Busid "PCI:0:1:1"
Driver "geode"
Screen 0
EndSection

Section "Monitor"
Identifier "Configured Monitor"
Vendorname "Generic LCD Display"
Modelname "LCD Panel 1024x600"
HorizSync 31.5 - 37.9
VertRefresh 50.0 - 70.0
DisplaySize 195 113
modeline "1024x600@60" 48.96 1024 1064 1168 1312 600 601 604 622 -HSync -VSync
Gamma 1.0
EndSection

Section "Screen"
Identifier "Default Screen"
Device "Configured Video Device"
Monitor "Configured Monitor"
Defaultdepth 24
SubSection "Display"
Depth 24
Virtual 1024 600
Modes "1024x600@60" "800x600@60"
EndSubSection
EndSection

Section "ServerLayout"
Identifier "Default Layout"
screen 0 "Default Screen" 0 0
EndSection
Section "Module"
Load "glx"
Load "GLcore"
Load "v4l"
EndSection
Section "ServerFlags"
EndSection

then insert vga=0x317 kernel option to /boot/grub/menu.list

/boot/vmlinuz-2.6.27-9-generic root=/dev/dsa3 ro vga=0x318

now reboot the system and you will have 1024x600 display in 24bit color depth

2. Speed up the system:

Stop the unwanted services; For that you can install sysv-rc-conf and uncheck unwanted services from run levels. See this forum thread
for more information
Reduce number of VTs starting; Go to /etc/event.d directory ant comment out all the lines in tty3, tty4, tty5, and tty6. This will only activate two VTs
Reducing access to the file-system; Edit /etc/fstab and add noatime option to root partition

/dev/sda3 / ext3 noatime,errors=remount-ro 0 1

Set journal data writeback option to filesystem; Edit /etc/fstab and add data=writeback option to root partition

/dev/sda3 / ext3 noatime,errors=remount-ro,data=writeback 0 1

and add rootflags=data=writeback kernel parameter to /boot/grub/menu.lst

/boot/vmlinuz-2.6.27-9-generic root= dev/dsa3 ro vga=0x318 rootflags=data=writeback

then restart the notebook and boot to single user mood and unmount / partition and run following command

sudo tune2fs -o journal_data_writeback /dev/

then reboot again

Reducing swaping; Edit /etc/sysctl.conf and append following two lines to the file

vm.swappiness=20
vm.vfs_cache_pressure=50

Choosing a better I/O Scheduler for kernel; add elevator=cfq to /boot/grub/menu.lst kernel parameters

/boot/vmlinuz-2.6.27-9-generic root= dev/dsa3 ro vga=0x318 rootflags=data=writeback elevator=cfq

Configure nautilus with removing the desktop; Open gconf-editor and go to apps > nauilus > preferences, uncheck show_desktop option
Configure metacity with reducing resources; Open gconf-editor and go to apps > metacity > general, check reduced_resources option

Thats all for now, reboot the notebook, you will see significant performance improvement after doing all the changes given above. Not only for above notebook, this method is good for other low performance notebooks and old notebooks.

References:

http://forums.debian.net/viewtopic.php?t=31275

http://ubuntuforums.org/showthread.php?t=107856

http://www.redhat.com/magazine/008jun05/features/schedulers/

http://www.twinhead.com.tw/

http://tldp.org/LDP/solrhe/Securing-Optimizing-Linux-RH-Edition-v1.3/chap6sec73.html

Advanced structured incremental backup system with rsync

2008-12-17T22:03:00.000-08:00

Tree scripts associated with this setup
1. backup_cs.sh
The main script which runs in client server (client of the rsync server). Which first script 'backup_ss_before.sh' in server and do the syncing process and run 'backup_ss_after.sh' script and finish the backup.
2. backup_ss_before.sh
The script which performing required background setting of the backup location
3. backup_ss_after.sh
The script which does the cleaning process after backing up the files
4.Before using this script you have to enable password less ssh/rsync login to remote host which you want to backup data.
#1. ssh user@remote_host
#2. ssh-keygen -t rsa
#3. Don not give any phrase as password, leave it blank when asked
#4. scp /home/user/.ssh/id_rsa.pub user@localhost
#5. get back to localhost and;
#6. cat id_rsa.pub >> /home/user/.ssh/authorized_keys
#now you can rsyn without entering password

backup_cs.sh


#!/bin/bash
# Copyright (C) 2008 Nayanajit Mahendra Laxaman mail: nmlaxaman@gmail.com

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.

#Enable disable daily weekly monthly yearly automated backup
DAILY=true
WEEKLY=true
MONTHLY=true
YEARLY=true

#Relative backup directories for each level
DAILY_BAK=daily
WEEKLY_BAK=weekly
MONTHLY_BAK=monthly
YEARLY_BAK=yearly

#Source(s) of backup directory
BACKUP_SOURCE=

#Destination of backup 
BACKUP_SERVER="@:"
REMOTE_EXEC="ssh @"

DAY=`date +%A`
TOMORROW_DATE=`date --date="next day" +%d`;
TOMORROW_MONTH=`date --date="next day" +%m`;
YESTERDAY=`date --date="yesterday" +%d-%m-%y`;
END_OF_WEEK=false
END_OF_MONTH=false
END_OF_YEAR=false

[[ $DAY == Friday ]] && END_OF_WEEK=true;
[[ $TOMORROW_DATE == 01 ]] &&  END_OF_MONTH=true;
[[ $TOMORROW_DATE == 01 ]] && [[ $TOMORROW_MONTH == 01 ]] && END_OF_YEAR=true;

#cd  $BACKUP_DEST

[[ -d $DAILY_BAK ]] || mkdir daily
[[ -d $WEEKLY_BAK ]] || mkdir weekly
[[ -d $MONTHLY_BAK ]] || mkdir monthly
[[ -d $YEARLY_BAK ]] || mkdir yearly

function debug(){
echo "DAILY:$DAILY
MONTHLY:$MONTHLY
YEARLY:$YEARLY
DAY:$DAY
TOMORROW_DATE:$TOMORROW_DATE
TOMORROW_MONTH:$TOMORROW_MONTH
YESTERDAY:$YESTERDAY
END_OF_MONTH:$END_OF_MONTH
END_OF_YEAR:$END_OF_YEAR"
}

#debug


TODAY_BACKUP=`date +%d-%m-%y`;
YESTERDAY_BACKUP=$DAILY_BAK/$YESTERDAY;
LASTWEEK_BACKUP=$WEEKLY_BAK/$( ls -tr $WEEKLY_BAK/ | tail -1 )
LASTMONTH_BACKUP=$MONTHLY_BAK/$( ls -tr $MONTHLY_BAK/ | tail -1 )
LASTYEAR_BACKUP=$YEARLY_BAK/$( ls -tr $YEARLY_BAK/ | tail -1 )
                                                            
$REMOTE_EXEC lms_backup_ss_before



if $YEARLY && $END_OF_YEAR; then
rsync -a --delete $BACKUP_SOURCE $BACKUP_SERVER/$YEARLY_BAK/$TODAY_BACKUP
exit 0
fi

if $MONTHLY && $END_OF_MONTH; then
rsync -a --delete $BACKUP_SOURCE $BACKUP_SERVER/$MONTHLY_BAK/$TODAY_BACKUP
exit 0
fi

if $WEEKLY && $END_OF_WEEK; then
rsync -a --delete $BACKUP_SOURCE $BACKUP_SERVER/$WEEKLY_BAK/$TODAY_BACKUP
exit 0
fi

if $DAILY; then
echo in
rsync -av --delete $BACKUP_SOURCE $BACKUP_SERVER/$DAILY_BAK/$TODAY_BACKUP
fi

$REMOTE_EXEC lms_backup_ss_after

backup_ss_before.sh


#!/bin/bash
# Copyright (C) 2008 Nayanajit Mahendra Laxaman mail: nmlaxaman@gmail.com

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.

#Enable disable daily weekly monthly yearly automated backup
DAILY=true
WEEKLY=true
MONTHLY=true
YEARLY=true

#Relative backup directories for each level
DAILY_BAK=daily
WEEKLY_BAK=weekly
MONTHLY_BAK=monthly
YEARLY_BAK=yearly


#Destination of backup 
BACKUP_DEST=

DAY=`date +%A`
TOMORROW_DATE=`date --date="next day" +%d`;
TOMORROW_MONTH=`date --date="next day" +%m`;
YESTERDAY=`date --date="yesterday" +%d-%m-%y`;

END_OF_WEEK=false
END_OF_MONTH=false
END_OF_YEAR=false

[[ $DAY == Friday ]] && END_OF_WEEK=true;
[[ $TOMORROW_DATE == 01 ]] &&  END_OF_MONTH=true;
[[ $TOMORROW_DATE == 01 ]] && [[ $TOMORROW_MONTH == 01 ]] && END_OF_YEAR=true;

cd  $BACKUP_DEST

[[ -d $DAILY_BAK ]] || mkdir daily
[[ -d $WEEKLY_BAK ]] || mkdir weekly
[[ -d $MONTHLY_BAK ]] || mkdir monthly
[[ -d $YEARLY_BAK ]] || mkdir yearly


TODAY_BACKUP=`date +%d-%m-%y`;

if [[ -d $DAILY_BAK/$TODAY_BACKUP ]]; then
exit 1
fi

YESTERDAY_BACKUP=
if [[ -d $DAILY_BAK/$YESTERDAY ]]; then
YESTERDAY_BACKUP=$DAILY_BAK/$YESTERDAY;
else
YESTERDAY_BACKUP=$DAILY_BAK/$( ls -tr $DAILY_BAK/ | tail -1 );
fi
LASTWEEK_BACKUP=$WEEKLY_BAK/$( ls -tr $WEEKLY_BAK/ | tail -1 )
LASTMONTH_BACKUP=$MONTHLY_BAK/$( ls -tr $MONTHLY_BAK/ | tail -1 )
LASTYEAR_BACKUP=$YEARLY_BAK/$( ls -tr $YEARLY_BAK/ | tail -1 )

if $YEARLY && $END_OF_YEAR && [[ -d $LASTYEAR_BACKUP ]]; then
cp -al $LASTYEAR_BACKUP/ $YEARLY_BAK/$TODAY_BACKUP
exit 0
fi

if $MONTHLY && $END_OF_MONTH && [[ -d $LASTMONTH_BACKUP ]]; then
cp -al $LASTMONTH_BACKUP/ $MONTHLY_BAK/$TODAY_BACKUP
exit 0
fi

if $WEEKLY && $END_OF_WEEK && [[ -d $LASTWEEK_BACKUP ]]; then
cp -al $LASTWEEK_BACKUP/ $WEEKLY_BAK/$TODAY_BACKUP
exit 0
fi

if $DAILY && [[ -d $YESTERDAY_BACKUP ]]; then
cp -al $YESTERDAY_BACKUP $DAILY_BAK/$TODAY_BACKUP
fi

backup_ss_after.sh


#!/bin/bash
# Copyright (C) 2008 Nayanajit Mahendra Laxaman mail: nmlaxaman@gmail.com

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.

#Set the number of backups to keep in each level
DAYS_TO_KEEP=7
WEEKS_TO_KEEP=4
MONTHS_TO_KEEP=4
YEARS_TO_KEEP=2

#Relative backup directories for each level
DAILY_BAK=daily
WEEKLY_BAK=weekly
MONTHLY_BAK=monthly
YEARLY_BAK=yearly

#Destination of backup 
BACKUP_DEST=

cd  $BACKUP_DEST

expr $( ls $YEARLY_BAK | wc -l ) \> $YEARS_TO_KEEP  &&  rm -fr $YEARLY_BAK/$( ls -t $YEARLY_BAK/ | tail -1 )
expr $( ls $MONTHLY_BAK | wc -l ) \> $MONTHS_TO_KEEP  &&  rm -fr $MONTHLY_BAK/$( ls -t $MONTHLY_BAK/ | tail -1 )
expr $( ls $WEEKLY_BAK | wc -l ) \> $WEEKS_TO_KEEP  &&  rm -fr $WEEKLY_BAK/$( ls -t $WEEKLY_BAK/ | tail -1 )
expr $( ls $DAILY_BAK | wc -l ) \> $DAYS_TO_KEEP  &&  rm -fr $DAILY_BAK/$( ls -t $DAILY_BAK/ | tail -1 )

rsync advanced backup script for structured incremental backups (updated 2)

2008-12-13T00:30:00.000-08:00


#!/bin/bash
# Copyright (C) 2008 Nayanajit Mahendra Laxaman mail: nmlaxaman@gmail.com

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.

#Enable disable daily weekly monthly yearly automated backup
DAILY=true
WEEKLY=true
MONTHLY=true
YEARLY=true

#Set the number of backups to keep in each level
DAYS_TO_KEEP=7
WEEKS_TO_KEEP=4
MONTHS_TO_KEEP=4
YEARS_TO_KEEP=2

#Relative backup directories for each level
DAILY_BAK=daily
WEEKLY_BAK=weekly
MONTHLY_BAK=monthly
YEARLY_BAK=yearly

#Source(s) of backup directory
BACKUP_SOURCE=/tmp/

#Destination of backup 
BACKUP_DEST=.

DAY=`date +%A`
TOMORROW_DATE=`date --date="next day" +%d`;
TOMORROW_MONTH=`date --date="next day" +%m`;
YESTERDAY=`date --date="yesterday" +%d-%m-%Y`;

END_OF_WEEK=false
END_OF_MONTH=false
END_OF_YEAR=false

[[ $DAY == Friday ]] && END_OF_WEEK=true;
[[ $TOMORROW_DATE == 01 ]] &&  END_OF_MONTH=true; 
[[ $TOMORROW_DATE == 01 ]] && [[ $TOMORROW_MONTH == 01 ]] && END_OF_YEAR=true;

[[ -d $DAILY_BAK ]] || mkdir daily
[[ -d $WEEKLY_BAK ]] || mkdir weekly
[[ -d $MONTHLY_BAK ]] || mkdir monthly
[[ -d $YEARLY_BAK ]] || mkdir yearly

function debug(){
echo "DAILY:$DAILY
MONTHLY:$MONTHLY
YEARLY:$YEARLY
DAY:$DAY
TOMORROW_DATE:$TOMORROW_DATE
TOMORROW_MONTH:$TOMORROW_MONTH
YESTERDAY:$YESTERDAY
END_OF_MONTH:$END_OF_MONTH
END_OF_YEAR:$END_OF_YEAR"
}

#debug

cd  $BACKUP_DEST

TODAY_BACKUP=`date +%d-%m-%y`;
YESTERDAY_BACKUP=$DAILY_BAK/$YESTERDAY;
LASTWEEK_BACKUP=$WEEKLY_BAK/$( ls -tr $WEEKLY_BAK/ | tail -1 )
LASTMONTH_BACKUP=$MONTHLY_BAK/$( ls -tr $MONTHLY_BAK/ | tail -1 )
LASTYEAR_BACKUP=$YEARLY_BAK/$( ls -tr $YEARLY_BAK/ | tail -1 )

if $YEARLY && $END_OF_YEAR; then
echo in
[[ -d $LASTYEAR_BACKUP ]] && cp -al $LASTYEAR_BACKUP/ $YEARLY_BAK/$TODAY_BACKUP
rsync -a --delete $BACKUP_SOURCE $YEARLY_BAK/$TODAY_BACKUP
expr $( ls $YEARLY_BAK | wc -l ) \> $YEARS_TO_KEEP  &&  rm -fr $( ls -t $YEARLY_BAK/ | tail -1 )
exit 0
fi

if $MONTHLY && $END_OF_MONTH; then
[[ -d $LASTMONTH_BACKUP ]] && cp -al $LASTMONTH_BACKUP/ $MONTHLY_BAK/$TODAY_BACKUP
rsync -a --delete $BACKUP_SOURCE $MONTHLY_BAK/$TODAY_BACKUP
expr $( ls $MONTHLY_BAK | wc -l ) \> $MONTHS_TO_KEEP  &&  rm -fr $( ls -t $MONTHLY_BAK/ | tail -1 )
exit 0
fi

if $WEEKLY && $END_OF_WEEK; then
[[ -d $LASTWEEK_BACKUP ]] && cp -al $LASTWEEK_BACKUP/ $WEEKLY_BAK/$TODAY_BACKUP
rsync -a --delete $BACKUP_SOURCE $WEEKLY_BAK/$TODAY_BACKUP
expr $( ls $WEEKLY_BAK | wc -l ) \> $WEEKS_TO_KEEP  &&  rm -fr $( ls -t $WEEKLY_BAK/ | tail -1 )
exit 0
fi

if $DAILY; then
[[ -d $YESTERDAY_BACKUP ]] && cp -al $YESTERDAY_BACKUP/ $DAILY_BAK/$TODAY_BACKUP
rsync -a --delete $BACKUP_SOURCE $DAILY_BAK/$TODAY_BACKUP
expr $( ls $DAILY_BAK | wc -l ) \> $DAYS_TO_KEEP  &&  rm -fr $( ls -t $DAILY_BAK/ | tail -1 )
fi

See bash script to keep incremental backup for backing up to remote server

Mac4Lin netbook Theme

2008-11-25T16:10:00.001-08:00

Modified Mac4Lin GTK theme for Ubuntu Netbook Remix

Download

Multi-threaded apt-get howto

2008-11-22T23:04:00.000-08:00

1. start synaptic package manager
2. select the package to be install
3. goto File > Package download script
4. cat package_download_script.sh | sed s/wget/'proz -k=10'/ > package_download_script_proz.sh
5. goto /var/cache/apt/archive/
6. execute the script here
6. run apt-get install

that's it

FLV video grabber for Linux

2008-11-22T22:28:00.000-08:00

As I see, it is possible to grab the video cached by your browser. For example, flash video your watching using youtube or any other video streaming site is caching in your browser cache while playing. If the caching bar of the streaming player completes the task, from the browser cache it is possible to grab that video.

This method is very useful because we don't have to download the video twice for future watching and waste our limited quota of download or the bandwidth.

Note that if you restart the browser or start playing another video in same player, browser will automatically delete earlier video cache. Therefore you have to do it before the player releases the cached file.

Here I have created an example script to grab FLV files from firefox web browser in Linux


#!/bin/bash
cache="$HOME/.mozilla/firefox/*.default/Cache"
videopath="$HOME/Videos"
files=`file $( du -sh $cache/* | grep M | awk '{print $2}') | grep Flash | awk -F ':' '{print $1}'`
for video in $files
do
cp $video $videopath/$(date  +%F_%H-%M-%S).flv
done

Shadows with CSS2 with DIV tags

2008-11-18T21:55:00.000-08:00

<div style="padding:0px;border:solid 2px #fff;border-top:solid 1px #fff;border-left:solid 1px #fff;">
<div style="padding:0px;border:solid 2px #eee;border-top:solid 1px #eee;border-left:solid 1px #eee;">
<div style="padding:0px;border:solid 2px #ddd;border-top:solid 1px #ddd;border-left:solid 1px #ddd;">
<div style="padding:0px;border:solid 2px #ccc;border-top:solid 1px #ccc;border-left:solid 1px #ccc;">
<div style="padding:0px;border:solid 2px #bbb;border-top:solid 1px #bbb;border-left:solid 1px #bbb;">
<div style="padding:0px;border:solid 2px #aaa;border-top:solid 1px #aaa;border-left:solid 1px #aaa;">
<div style="padding:0px;border:solid 2px #999;border-top:solid 1px #999;border-left:solid 1px #999;">
<div style="padding:0px;border:solid 2px #888;border-top:solid 1px #888;border-left:solid 1px #888;">
<div>
Your content goes here
</div>
</div>
</div>
</div>
</div>
</div>
</div>

Opening a Laboratory with PokuruPCs

2008-11-15T00:59:00.000-08:00

Opening ceremony of PokuruPC lab at Dharmasoka widyalaya, Ambalangoda Sri Lanka.

Rounded corners and Shadows using CSS3

2008-11-15T00:20:00.000-08:00

This method is currently working for firefox and safari browsers. The code is given bellow

Multi terminal configuration automate package (automseat)

2008-09-17T22:39:00.001-07:00

Multi terminal configuration automate package (automseat) Is now available at in both .deb and .rpm formats

PokuruPC In Action

2008-09-17T22:39:00.000-07:00

PokuruPC setup on Ambalangoda Dharmasoka college Sri Lanka. PokuruPC can be downloaded from http://ucsc.cmb.ac.lk/wasn/ in Research pag.

Sned sms server status reports to you mobile phone

2008-08-20T23:41:00.001-07:00

Add following entries to /etc/crontab

10 * * * * root /bin/bash /path/to/alert.sh
10 20 * * * root /bin/bash /path/to/info.sh

alert.sh:


#!/bin/bash
MESSAGE=""
APACHE=$(ps aux | grep  apache | grep  -v 'grep' | wc -l)
MYSQL=$(ps aux | grep  mysql | grep  -v 'grep' | wc -l)

MESSAGE="A:$APACHE,M:$MYSQL"

if [[ $MYSQL == "0" || $APACHE == "0" ]]; then
sms -r r1 -u your_name -p your_password -m "$MESSAGE"
else
echo "$MESSAGE"
fi

info.sh:


#!/bin/bash
SPACE=$( df -h /var | grep var | awk '{print $4}' )
UPTIME=$( uptime | awk '{print $3}' )
WHO=$( who | awk '{print $1}' )
APACHE=$(ps aux | grep  apache | grep  -v 'grep' | wc -l)
MYSQL=$(ps aux | grep  mysql | grep  -v 'grep' | wc -l)

MESSAGE="S:$SPACE,U:$UPTIME,W:$WHO,A:$APACHE,M:$MYSQL"
echo $MESSAGE

sms -r r1 -u yourname -p your_password -m "$MESSAGE"

Blogged with the Flock Browser

Send sms Bash script

2008-08-20T23:33:00.001-07:00

Save the following script in /usr/bin/sms and make it executable (chmod +x /usr/bin/sms)

then type sms in your terminal...

To find the user_id s, log in to wow.lk sms account once, and go send sms mode and read source code. You will be able to find the id for the users you have added to your wow-sms account. Then include those in user_id1, user_id2, and so on in the script.


#!/bin/bash
# Copyright (C) 2008 Nayanajit Mahendra Laxaman mail: nmlaxaman@gmail.com

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.

RECIEVER=""
MESSEGE=""
ACCOUNT=""
ACC=""
RES=""
INFO=false
COOKEY=""

USER=
PASSWORD=

PROXY=":"

user1=user_id1
user2=user_id2 
user3=user_id3


# Show usage if necessary
function usage(){
echo "Usage: $0 -r [reciever]  -u [username] -p [password] -x [proxy] -m [message]-i ";
echo "";
echo "[reciever] = name of the reciever as in suntel sms account";
echo "[message]  = Text of message you want to send with 140 letters";
# echo "[account]  = you can have multiple accounts to wow site";
echo "[username]  = Username to login wow site";
echo "[password]  = Password to login wow site";
echo "[proxy]  = Your web proxy in <ip>:<port> format (default:192.248.16.90:3128)";
echo "-i  = Show information of the accounts and senders";
exit 1;
}

if [ $# -eq 0 ]; then
usage;
fi

#Show senders and accounts information
function info(){
echo "Reciever:"
echo "<No.>    <Name>"
echo "
r1    user1(name)
r2    user2(name)
r3    user2(name)
"
exit;
}

# Get command line arguments
while [ "$1" != "" ] ; do
   case $1
   in
   -r)
       # Get the SMS number that we should send message to
       RECIEVER=$2;
       shift 2;
       ;;
   -m)
       # Get the message we should send
       MESSEGE=$2;
       shift 2;
       ;;
   -a)
       # Get the account
       ACCOUNT=$2;
       shift 2;
       ;;
   -u)
       # Get username
       USER=$2;
       shift 2;
       ;;
   -p)
       # Get password
       PASSWORD=$2;
       shift 2;
       ;;
   -x)
       # Get password
       PROXY=$2;
       shift 2;
       ;;
   -i)
       # Show information
       INFO=true;
       shift 1;
       ;;
   *)
       echo "Unknown option: $1"
       usage;
       ;;
   esac
done






if [[ $INFO == true ]]; then
info;
fi


ACC="Username=$USER&Password=$PASSWORD"
COOKEY="$HOME/.sms/cookey.$USER"

case $RECIEVER in
r1)
 RES=$user1
;;
r2)
 RES=$user2
;;
r3)
 RES=$user3
;;
*)
 info;
;;
esac


function debug(){
echo "curl -x $PROXY --cookie $COOKEY --cookie-jar $COOKEY --user-agent Mozilla/4.0 --data $ACC&Submit=Submit&Action=login http://sms.wow.lk/user/login.php"
echo "curl -x $PROXY --cookie $COOKEY  --user-agent Mozilla/4.0 --data message=$MESSEGE&action=send&Submit=Send+SMS&$RES=$RES http://sms.wow.lk/user/sendmessages.php"
}


function sendSms(){
curl -x $PROXY --cookie $COOKEY --cookie-jar $COOKEY --user-agent Mozilla/4.0 --data "$ACC&Submit=Submit&Action=login" http://sms.wow.lk/user/login.php >/dev/null
curl -x $PROXY --cookie $COOKEY  --user-agent Mozilla/4.0 --data "message=$MESSEGE&action=send&Submit=Send+SMS&$RES=$RES" http://sms.wow.lk/user/sendmessages.php >/dev/null
}



if [[ $MESSEGE != "" && $ACC != "" && $RES != "" && $PROXY != "" && $COOKEY != "" ]]; then
# debug;
sendSms;
else
echo "Check your parameters!!"
fi

Blogged with the Flock Browser

bash script to keep incremental backup

2008-08-20T23:25:00.001-07:00

Add following entry to /etc/crontab

20 4 * * * root /bin/bash /path/to/sync.sh


#!/bin/bash
# Copyright (C) 2008 Nayanajit Mahendra Laxaman mail: nmlaxaman@gmail.com

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.

### help ###
#Before using this script you have to enable password less ssh/rsync login to remote host which you want to synchronize the data.
#1. ssh user@remote_host
#2. ssh-keygen -t rsa
#3. Don not give any phrase as password, leave it blank when asked
#4. scp /home/user/.ssh/id_rsa.pub user@localhost
#5. get back to localhost and;
#6. cat id_rsa.pub >> /home/user/.ssh/authorized_keys
#now you can rsyn without entering password
###########

#backing up database
BACKUPDIR=/root/backup_system
LOG=lms_backup_`date +%m%d%Y`.log

MOODLEWEB=/var/www/moodle_ug_2008
MOODLEDATA=/var/moodledata_ug_2008
LOGS=/var/log

DBUSERNAME=root
DBPASSWORD=letmeinliant
DATABASE=moodledb_ug_2008
DUMPOPTS="--add-drop-table"
DUMPDB=moodledb_ug_2008.sql

#SYNCHOST=root@ICTer.org
SYNCHOST=root@192.248.16.114
SYNCDIR=/usr/local/backups_lms_ug/sync/
SYNCOPTS="-avz --delete --force --ignore-errors --whole-file"

cd  $BACKUPDIR
#dump database
echo "Start mysqldump at `date`" >> $LOG
mysqldump -u$DBUSERNAME -p$DBPASSWORD $DUMPOPTS $DATABASE > $DUMPDB 2>>$LOG
echo "End mysqldump at `date`" >> $LOG

#syncing web and data directories
echo "Start rsync web and data directories at `date`" >> $LOG
rsync $SYNCOPTS $MOODLEWEB $MOODLEDATA $LOGS $SYNCHOST:$SYNCDIR >>$LOG 2>>$LOG
echo "End rsync web and data directories at `date`" >> $LOG

#syncing database and log
echo "Start rsync database and log at `date`" >> $LOG
rsync $SYNCOPTS $DUMPDB $LOG $SYNCHOST:$SYNCDIR >>$LOG 2>>$LOG
echo "Start rsync database and log at `date`" >> $LOG

Blogged with the Flock Browser

2008-07-02T22:42:00.000-07:00

Multiseat setup:

Modification for fully functioning Automation Script for Linux multiseat / multiterminal

2008-06-19T20:27:00.000-07:00

This modified script will work for more than 2 terminals
**Installation is similar to earlier script
Ref:Multiterminal with evdev
New version:

#!/bin/bash

# Copyright (C) 2008 Nayanajit Mahendra Laxaman WASN-LAB University of Colombo School of Computing mail: nmlaxaman@gmail.com

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.


conf="/etc/multiseat.conf"

source $conf
if [ $reconfigure == false ]
then
echo -e '\033[00;32m**NOT\033[00;00mConfiguring /etc/multiseat.conf no /etc/gdm/gdm.conf-custom'
#echo "Set reconfigure=true in /etc/multiseat.confif you want to reconfigure /etc/multiseat.conf no /etc/gdm/gdm.conf-custom in netx boot"
else
echo -e '\033[00;32m**\033[00;00mConfiguring /etc/multiseat.conf...'
################################INPUT DEVICES##################################




: ${DIALOG=whiptail}

: ${DIALOG_OK=0}
: ${DIALOG_CANCEL=1}
: ${DIALOG_ESC=255}
: ${DIALOG_RENAME=3}

tempfile=`tempfile 2>/dev/null` || tempfile=/tmp/test$$
trap "rm -f $tempfile" 0 1 2 5 15

echo "#Multiseat device configuration file auto generated by multiseat_config on `date +'%Y-%m-%d.%H:%M:%S'` " > $conf
echo "reconfigure=true" >> $conf
echo "vbrose=false" >> $conf




for inputdev in mouse kbd;
do
list=""
s="s"
if [ $vbrose == true ] ; then
count=0
for item in `cat /proc/bus/input/devices | grep -i $inputdev -B3 | grep Phys | grep  -e isa -e usb | awk '{print $2}' | grep input0 | sed -e s/Phys=// -e s@isa[0-9].../input[0-9]@@` ;
do
list="$list $item $inputdev:$count on";
count=$( expr $count + 1 )
done
$DIALOG --backtitle "$inputdev$s configuration" \
--title "$inputdev list" \
    --checklist "Avilable $inputdev s are listed bellow with physical address please select the correct ones. /prc/bus/input/devices will be helpful when choosing the correct devices " 20 45 5 \
     $list 2> $tempfile

retval=$?
choice=`cat $tempfile`
case $retval in
$DIALOG_OK)
choices=$( echo $choices | sed  s/'"'// );
echo "$inputdev$s=\"$choice\"" >> $conf ;;
$DIALOG_CANCEL)
echo "Cancel pressed.";;
$DIALOG_ESC)
echo "ESC pressed.";;
*)
echo "Unexpected return code: $retval (ok would be $DIALOG_OK)";;
esac
else
list=$( cat /proc/bus/input/devices | grep -i $inputdev -B3 | grep Phys | grep  -e isa -e usb | awk '{print $2}' | grep  input0 | sed -e s/Phys=// -e s@isa[0-9].../input[0-9]@@ )
list=$( echo $list )
echo  "$inputdev$s=\"$list\"" >> $conf
fi
done





######################################VGA#######################################
function hextodec(){
let i1=$( echo $1 | awk -F ':' '{print "0x"$1}' )
i2=$( echo $1 | awk -F ':' '{print $2}' )
let i3=$( echo $i2 | awk -F '.' '{print "0x"$1}' )
let i4=$( echo $i2 | awk -F '.' '{print "0x"$2}' )
echo  "$i1:$i3:$i4"
}

devices=""
vgas=$( lspci | grep VGA |  awk '{print $5"@"$1}' )
for vga in $vgas
do
driver=`echo $vga | awk -F '@' '{print $1}'`
busid=`echo $vga | awk -F '@' '{print $2}'`
case $driver in
 Intel)
 driver="intel"
 ;;
 ATI)
 driver="ati"
 ;;
 Matrox)
 driver="mga"
 ;;
 nVidia)
 driver="nv"
 ;;
 Silicon)
 driver="sis"
 ;;
 *)
 driver="vesa"
 echo "**Default driver choosen for VGA if you aware with the driver name, please modify $driver@PCI:$busid  in $conf "
 ;;
esac
busid=$( hextodec $busid )
devices="$devices $driver@PCI:$busid"
done

if [ $vbrose == true ] ; then
$DIALOG --backtitle "VGA configuration" --inputbox "Auto generated devices string is given bellow with the format @PCI: you can change now if you will" 10 60 "$devices" 2> $tempfile

retval=$?
choice=`cat $tempfile`
case $retval in
$DIALOG_OK)
echo "devices=\"$choice\"" >> $conf;;
$DIALOG_CANCEL)
echo "Cancel pressed.";;
$DIALOG_ESC)
echo "ESC pressed.";;
*)
echo "Unexpected return code: $retval (ok would be $DIALOG_OK)";;
esac

else
echo "devices=\"$devices\"" >> $conf
fi





##############################writing gdm.conf-custom##############################
#command=/usr/X11R6/bin/X -nolisten tcp -novtswitch -sharevts -layout layout:N: vt:T: ::N:
source $conf

stdserverid=':N:=Standard:N:
'
stdserver='
[server-Standard:N:]
name=Standard server
command=/usr/X11R6/bin/X:N: -novtswitch -sharevts -layout layout:N:  vt:T:
flexible=false
'
sing=0

for device in $devices
do
sing=$( expr $sing + 1 )
done

dno=0
tno=2
if [[ $sing -gt 1 ]]
then
for device in $devices
do
ln -s $( which X ) $( which X )$dno 2>/dev/null

serverid="$serverid
$( echo "$stdserverid" |sed s/:N:/$dno/ |sed s/:N:/$dno/)"
server="$server"$(echo "$stdserver" |sed -e s/:N:/$dno/ -e s/:N:/$dno/ -e s/:N:/$dno/ -e s/:T:/$tno/);
dno=$( expr $dno + 1 )
tno=$( expr $tno + 1 )
done

gdmconf="/etc/gdm/gdm.conf-custom"

echo -e '\033[00;32m**\033[00;00mConfiguring /etc/gdm/gdm.conf-custom...'
#cp $gdmconf $gdmconf.`date +'%Y-%m-%d.%H-%M-%S'`
if [[ ! -f "$gdmconf.bak" ]]
then
cp "$gdmconf" "$gdmconf.bak"
fi
echo "#Multiseat gdm configuration file auto generated by multiseat_config on `date +'%Y-%m-%d.%H:%M:%S'`" > $gdmconf
echo "[servers]" >> $gdmconf
echo "$serverid" >> $gdmconf
echo "$server" >> $gdmconf
else
echo -e '\033[00;32m**\033[00;00mFound single VGA card computer!!'

#restoring gdm.conf-custom
gdmconf="/etc/gdm/gdm.conf-custom"
xconf="/etc/X11/xorg.conf"

if [[ -f "$gdmconf.bak" ]]
then
cp "$gdmconf.bak" "$gdmconf"
else
rm -f "$gdmconf"
fi

#Restoring xorg.conf
if [[ -f $xconf.bak ]]
then
cp $xconf.bak $xconf
else
dpkg-reconfigure -phigh xserver-xorg
fi

exit 0
fi
fi




############################setting up startup script###########################

conf=/etc/multiseat.conf

source $conf

mousesection='
Section "InputDevice"
    Identifier      "mouse:M:"
    Driver          "mouse"
    Option          "Device"        "/dev/input/:E:"
    Option          "CorePointer"
    Option          "ZAxisMapping"  "4 5"
    Option          "Emulate3Buttons"       "true"
EndSection
'
kbdsection='
Section "InputDevice"
Identifier      "keyboard:K:"
    Driver          "evdev"
    Option          "Device"        "/dev/input/:E:"
    Option          "CoreKeyboard"
    Option          "XkbRules"      "xorg"
    Option          "XkbModel"      "evdev"
    Option          "XkbLayout"     "us"
EndSection
'
devsection='
Section "Device"
    Identifier      "device:D:"
    Driver          ":DR:"
    Busid           ":B:"
Option          "NoInt10" "Yes"
EndSection
'
devsection_p='
Section "Device"
    Identifier      "device:D:"
    Driver          ":DR:"
    Busid           ":B:"
Option          "NoInt10" "No"
EndSection
'
monitorsection='
Section "Monitor"
    Identifier      "monitor:MO:"
    Option          "DPMS"
EndSection
'
screensection='
Section "Screen"
    Identifier      "screen:S:"
    Device          "device:D:"
    Monitor         "monitor:MO:"
    Defaultdepth    24
    SubSection "Display"
            Modes   "1360x768" "1280x1024" "1024x768"
    EndSubSection
EndSection
'
layoutsection='
Section "ServerLayout"
    Identifier      "layout:L:"
    screen          "screen:S:"
    Inputdevice     "keyboard:K:"
    Inputdevice     "mouse:M:"
    Option          "IsolateDevice" ":B:"
EndSection
'

flagssection='
Section "ServerFlags"
#        Option         "DontZap"  "true"
#        Option         "DontVTSwitch"  "true"
#        Option         "HandleSpecialKeys"     "Always"
#  Option  "BlankTime"    "0"
#        Option     "StandbyTime"  "0"
#        Option     "SuspendTime"  "0"
#        Option     "OffTime"      "0"
    Option          "AllowMouseOpenFail"    "true"
EndSection
'

mouse=""
kbd=""
mno=0
kno=0
dno=0

xconf=/etc/X11/xorg.conf
pxconf=/etc/X11/xorg.conf.probe

echo -e '\033[00;32m**\033[00;00mConfiguring /etc/X11/xorg.conf and /etc/X11/xorg.conf.probe ...'
#cp $xconf $xconf.`date +'%Y-%m-%d.%H-%M-%S'`
if [ ! -f $xconf.bak ]
then
cp $xconf $xconf.bak
fi

echo "#Generated by MXconfGen on `date`" > $xconf
echo "#Generated by MXconfGen on `date` for probe only" > $pxconf

for mouse in $mouses
do
dev=`grep -A3 $mouse /proc/bus/input/devices | grep 'H: Handlers=' | grep --only-matching -e 'mouse[0-9]*'`
echo "$mousesection" | sed -e s/:E:/$dev/ -e s/:M:/$mno/ >>  $xconf
mno=$( expr $mno + 1 )
done

for kbd in $kbds
do
dev=`grep -A3 $kbd /proc/bus/input/devices | grep 'H: Handlers=' | grep --only-matching -e 'event[0-9]*'`
echo "$kbdsection" | sed -e s/:E:/$dev/  -e s/:K:/$kno/ >>  $xconf
kno=$( expr $kno + 1 )
done

for device in  $devices
do
driver=$( echo $device  | awk -F '@' '{print $1}' )
busid=$( echo $device  | awk -F '@' '{print $2}' )

echo  "$devsection" | sed -e s/:DR:/$driver/  -e s/:B:/$busid/ -e s/:D:/$dno/ >>  $xconf
echo "$monitorsection" | sed s/:MO:/$dno/  >>  $xconf
echo "$screensection" | sed -e s/:S:/$dno/ -e s/:D:/$dno/ -e s/:MO:/$dno/ >>  $xconf
echo "$layoutsection" | sed -e s/:L:/$dno/ -e s/:L:/$dno/  -e s/:K:/$dno/ -e s/:M:/$dno/ -e s/:B:/$busid/ -e s/:S:/$dno/ >>  $xconf

###################Creating xorg.conf.probe for Xorg probing####################


echo  "$devsection_p" | sed -e s/:DR:/$driver/  -e s/:B:/$busid/ -e s/:D:/$dno/ >>  $pxconf
echo "$monitorsection" | sed s/:MO:/$dno/  >>  $pxconf
echo "$screensection" | sed -e s/:S:/$dno/ -e s/:D:/$dno/ -e s/:MO:/$dno/ >>  $pxconf

dno=$( expr $dno + 1 )
done

screens=""
sno=0

for device in  $devices
do
screens=$screens" screen          \"screen$sno\"
"
sno=$( expr $sno + 1 )
done


echo '
Section "ServerLayout"
    Identifier      "probe"'  >>  $pxconf
echo "$screens" >>  $pxconf
echo 'EndSection'  >>  $pxconf

############################ server flags for xorg.conf#####################
echo "$flagssection" >>  $xconf

#################################probing Xorg###############################
echo -e '\033[00;32m**\033[00;00mProbing Xorg ...'
Xorg -config $pxconf -probeonly 2>/dev/null

Fully functioning Automation Script for Linux multiseat / multiterminal

2008-05-13T20:55:00.000-07:00

Introduction:
All you have to do is to put this script in your computer and set it to execute before gdm starts when starting the computer
It will automatically detect the hardware configuration and make the changes at the startup time
So you can plug as many as VGAs and MOUSEs KBDs to the computer and restart the computer. The script will automatically reconfigure the system according to current configuration
In the same way if your remove the hardware, the script will reconfigure the system to current hardware configuration
Detected hardware and some parameters are available in /etc/multiseat.conf
If the script did not detect the driver for vga correctly it will use VESA as the driver. If you know the driver so you can edit /etc/multiseat.conf to fit the configuration. When you are making configuration manually make reconfigure=false in /etc/multiseat.conf to not to overwrite at next startup. You can also edit the script to insert correct driver at startup time also. The script is not that difficult to understand.
If you want to do the configuration in verbose mode you can make verbose=true in /etc/multiseat.conf
If you do not want to reconfigure the system every time, the system boot make reconfigure=false in /etc/multiseat.conf

Ref:Chris Tyler's Blog
Installation:

Copy the script given bellow to a file eg: MXconfGen

cat > MXconfGen
Past the coppyed content
press CTRL+C

Make the script executable

chmod +x MXconfGen

Place the script in /etc/init.d/

sudo cp MXconfGen /etc/init.d/

Make it execute at start time

sudo update-rc.d MXconfGen start 70 S .
this command works for debian based systems

Now reboot the system THATS ALL!

Find more info in our WASN website at University
There go to Research > Linux Multiseat environment


#!/bin/bash

# Copyright (C) 2008 Nayanajit Mahendra Laxaman WASN-LAB University of Colombo School of Computing mail: nmlaxaman@gmail.com

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

conf="/etc/multiseat.conf"

source $conf
if [ $reconfigure == false ]
then
echo -e '\033[00;32m**NOT\033[00;00mConfiguring /etc/multiseat.conf no /etc/gdm/gdm.conf-custom'
#echo "Set reconfigure=true in /etc/multiseat.confif you want to reconfigure /etc/multiseat.conf no /etc/gdm/gdm.conf-custom in netx boot"
else
echo -e '\033[00;32m**\033[00;00mConfiguring /etc/multiseat.conf...'
##############################INPUT DEVICES################################




: ${DIALOG=whiptail}

: ${DIALOG_OK=0}
: ${DIALOG_CANCEL=1}
: ${DIALOG_ESC=255}
: ${DIALOG_RENAME=3}

tempfile=`tempfile 2>/dev/null` || tempfile=/tmp/test$$
trap "rm -f $tempfile" 0 1 2 5 15

echo "#Multiseat device configuration file auto generated by multiseat_config on `date +'%Y-%m-%d.%H:%M:%S'` " > $conf
echo "reconfigure=true" >> $conf
echo "vbrose=false" >> $conf




for inputdev in mouse kbd;
do
list=""
s="s"
if [ $vbrose == true ] ; then
count=0
for item in `cat /proc/bus/input/devices | grep -i $inputdev -B3 | grep Phys | grep  -e isa -e usb | awk '{print $2}' | grep input0 | sed -e s/Phys=// -e s@isa[0-9].../input[0-9]@@` ;
do
list="$list $item $inputdev:$count on";
count=$( expr $count + 1 )
done
$DIALOG --backtitle "$inputdev$s configuration" \
--title "$inputdev list" \
--checklist "Avilable $inputdev s are listed bellow with physical address please select the correct ones. /prc/bus/input/devices will be helpful when choosing the correct devices " 20 45 5 \
 $list 2> $tempfile

retval=$?
choice=`cat $tempfile`
case $retval in
$DIALOG_OK)
choices=$( echo $choices | sed  s/'"'// );
echo "$inputdev$s=\"$choice\"" >> $conf ;;
$DIALOG_CANCEL)
echo "Cancel pressed.";;
$DIALOG_ESC)
echo "ESC pressed.";;
*)
echo "Unexpected return code: $retval (ok would be $DIALOG_OK)";;
esac
else
list=$( cat /proc/bus/input/devices | grep -i $inputdev -B3 | grep Phys | grep  -e isa -e usb | awk '{print $2}' | grep  input0 | sed -e s/Phys=// -e s@isa[0-9].../input[0-9]@@ )
list=$( echo $list )
echo  "$inputdev$s=\"$list\"" >> $conf
fi
done





####################################VGA#####################################
function hextodec(){
let i1=$( echo $1 | awk -F ':' '{print "0x"$1}' )
i2=$( echo $1 | awk -F ':' '{print $2}' )
let i3=$( echo $i2 | awk -F '.' '{print "0x"$1}' )
let i4=$( echo $i2 | awk -F '.' '{print "0x"$2}' )
echo  "$i1:$i3:$i4"
}

devices=""
vgas=$( lspci | grep VGA |  awk '{print $5"@"$1}' )
for vga in $vgas
do
driver=`echo $vga | awk -F '@' '{print $1}'`
busid=`echo $vga | awk -F '@' '{print $2}'`
case $driver in
Intel)
driver="intel"
;;
ATI)
driver="ati"
;;
Matrox)
driver="mga"
;;
nVidia)
driver="nv"
;;
Silicon)
driver="sis"
;;
*)
driver="vesa"
echo "**Default driver choosen for VGA if you aware with the driver name, please modify $driver@PCI:$busid  in $conf "
;;
esac
busid=$( hextodec $busid )
devices="$devices $driver@PCI:$busid"
done

if [ $vbrose == true ] ; then
$DIALOG --backtitle "VGA configuration" --inputbox "Auto generated devices string is given bellow with the format @PCI: you can change now if you will" 10 60 "$devices" 2> $tempfile

retval=$?
choice=`cat $tempfile`
case $retval in
$DIALOG_OK)
echo "devices=\"$choice\"" >> $conf;;
$DIALOG_CANCEL)
echo "Cancel pressed.";;
$DIALOG_ESC)
echo "ESC pressed.";;
*)
echo "Unexpected return code: $retval (ok would be $DIALOG_OK)";;
esac

else
echo "devices=\"$devices\"" >> $conf
fi





#############################writing gdm.conf-custom#############################
source $conf

stdserverid=':N:=Standard:N:
'
stdserver='
[server-Standard:N:]
name=Standard server
command=/usr/X11R6/bin/X -novtswitch -sharevts -layout layout:N:
flexible=false
'
sing=0

for device in $devices
do
sing=$( expr $sing + 1 )
done

dno=0
if [[ $sing -gt 1 ]]
then
for device in $devices
do
serverid="$serverid
$( echo "$stdserverid" |sed s/:N:/$dno/ |sed s/:N:/$dno/)"
server="$server"$(echo "$stdserver" |sed s/:N:/$dno/ |sed s/:N:/$dno/);
dno=$( expr $dno + 1 )
done

gdmconf="/etc/gdm/gdm.conf-custom"

echo -e '\033[00;32m**\033[00;00mConfiguring /etc/gdm/gdm.conf-custom...'
#cp $gdmconf $gdmconf.`date +'%Y-%m-%d.%H-%M-%S'`
if [[ ! -f "$gdmconf.bak" ]]
then
cp "$gdmconf" "$gdmconf.bak"
fi
echo "#Multiseat gdm configuration file auto generated by multiseat_config on `date +'%Y-%m-%d.%H:%M:%S'`" > $gdmconf
echo "[servers]" >> $gdmconf
echo "$serverid" >> $gdmconf
echo "$server" >> $gdmconf
else
echo -e '\033[00;32m**\033[00;00mFound single VGA card computer!!'

#restoring gdm.conf-custom
gdmconf="/etc/gdm/gdm.conf-custom"
xconf="/etc/X11/xorg.conf"

if [[ -f "$gdmconf.bak" ]]
then
cp "$gdmconf.bak" "$gdmconf"
else
rm -f "$gdmconf"
fi

#Restoring xorg.conf
if [[ -f $xconf.bak ]]
then
cp $xconf.bak $xconf
else
dpkg-reconfigure -phigh xserver-xorg
fi

exit 0
fi
fi




###########################setting up startup script##########################

conf=/etc/multiseat.conf

source $conf

mousesection='
Section "InputDevice"
Identifier      "mouse:M:"
Driver          "mouse"
Option          "Device"        "/dev/input/:E:"
Option          "CorePointer"
Option          "ZAxisMapping"  "4 5"
Option          "Emulate3Buttons"       "true"
EndSection
'
kbdsection='
Section "InputDevice"
Identifier      "keyboard:K:"
Driver          "evdev"
Option          "Device"        "/dev/input/:E:"
Option          "CoreKeyboard"
Option          "XkbRules"      "xorg"
Option          "XkbModel"      "evdev"
Option          "XkbLayout"     "us"
EndSection
'
devsection='
Section "Device"
Identifier      "device:D:"
Driver          ":DR:"
Busid           ":B:"
EndSection
'
monitorsection='
Section "Monitor"
Identifier      "monitor:MO:"
Option          "DPMS"
EndSection
'
screensection='
Section "Screen"
Identifier      "screen:S:"
Device          "device:D:"
Monitor         "monitor:MO:"
Defaultdepth    24
SubSection "Display"
        Modes           "1024x768"
EndSubSection
EndSection
'
layoutsection='
Section "ServerLayout"
Identifier      "layout:L:"
screen          "screen:S:"
Inputdevice     "keyboard:K:"
Inputdevice     "mouse:M:"
Option          "IsolateDevice" ":B:"
EndSection
'
initlayoutsection='
Section "ServerLayout"
Identifier      "layout:L:"
screen          "screen:S:"
Inputdevice     "keyboard:K:"
Inputdevice     "mouse:M:"
Option          "IsolateDevice" ":B:"
EndSection
'


flagssection='
Section "ServerFlags"
#        Option         "DontZap"  "true"
#        Option         "DontVTSwitch"  "true"
#        Option         "HandleSpecialKeys"     "Always"
#     Option        "BlankTime"    "0"
#        Option        "StandbyTime"  "0"
#        Option        "SuspendTime"  "0"
#        Option        "OffTime"      "0"
Option          "AllowMouseOpenFail"    "true"
EndSection
'

mouse=""
kbd=""
mno=0
kno=0
dno=0

xconf=/etc/X11/xorg.conf

echo -e '\033[00;32m**\033[00;00mConfiguring /etc/X11/xorg.conf...'
#cp $xconf $xconf.`date +'%Y-%m-%d.%H-%M-%S'`
if [ ! -f $xconf.bak ]
then
cp $xconf $xconf.bak
fi

echo "#Generated by MXconfGen on `date`" > $xconf

for mouse in $mouses
do
dev=`grep -A3 $mouse /proc/bus/input/devices | grep 'H: Handlers=' | grep --only-matching -e 'mouse[0-9]*'`
echo "$mousesection" | sed -e s/:E:/$dev/ -e s/:M:/$mno/ >>  $xconf
mno=$( expr $mno + 1 )
done

for kbd in $kbds
do
dev=`grep -A3 $kbd /proc/bus/input/devices | grep 'H: Handlers=' | grep --only-matching -e 'event[0-9]*'`
echo "$kbdsection" | sed -e s/:E:/$dev/  -e s/:K:/$kno/ >>  $xconf
kno=$( expr $kno + 1 )
done

for device in  $devices
do
driver=$( echo $device  | awk -F '@' '{print $1}' )
busid=$( echo $device  | awk -F '@' '{print $2}' )
echo  "$devsection" | sed -e s/:DR:/$driver/  -e s/:B:/$busid/ -e s/:D:/$dno/ >>  $xconf
echo "$monitorsection" | sed s/:MO:/$dno/  >>  $xconf
echo "$screensection" | sed -e s/:S:/$dno/ -e s/:D:/$dno/ -e s/:MO:/$dno/ >>  $xconf
echo "$layoutsection" | sed -e s/:L:/$dno/ -e s/:L:/$dno/  -e s/:K:/$dno/ -e s/:M:/$dno/ -e s/:B:/$busid/ -e s/:S:/$dno/ >>  $xconf
dno=$( expr $dno + 1 )
done

echo "$flagssection" >>  $xconf

2007-09-25T03:12:00.000-07:00

Qemu with networking

2007-09-16T02:59:00.001-07:00

1.Building the enviorenment:

apt-get install qemu
apt-get install uml-utilities
apt-get install bridge-utils

2.Configuring HostOS:

modprobe tun
mkdir /dev/net
mknod /dev/net/tun c 10 200
tunctl
brctl addbr br0
create /etc/qemu-ifup file and make it executable

#!/bin/sh
echo "Executing /etc/qemu-ifup"
echo "Bringing up $1 for bridged mode..."
ifconfig $1 0.0.0.0 promisc up
echo "Adding $1 to br0..."
brctl addif br0 $1
sleep 2

Create qemu-start.sh script and make it executable

#!/bin/bash

ARGS="-hda /dev/sda -boot c -net nic,vlan=0 -net tap,vlan=0,ifname=tap0,script=/etc/qemu-ifup -m 256 -localtime"
echo "Loading kqemu kernel module..."
modprobe kqemu
echo "...."
echo "Starting QEMU with..."
echo $ARGS
echo "...."
echo "Setting memory"
umount /dev/shm
mount -t tmpfs -o size=272m none /dev/shm
exec qemu $ARGS

host ip is => 192.248.17.221
ifconfig tap0 192.248.17.222 up
Start qemu with qemu-start.sh

3.Configuring GuestOS:

ifconfig eth0 192.248.17.223/24 up
route add default gw 192.248.17.222
ping 192.248.17.222

4.References:

http://compsoc.dur.ac.uk/~djw/qemu.html
http://ubuntuforums.org/showthread.php?t=179472
http://wiki.openvz.org/Using_private_IPs_for_Hardware_Nodes

Add security policy in tomcat5 on ubuntu

2007-08-29T04:48:00.000-07:00

open the file
/etc/tomcat5/policy.d/04webapps.policy
and add folowing lines to that file here the container directory is "test" replace your container directory with "test"

grant codeBase "file:${catalina.home}/webapps/test/WEB-INF/classes/-" {
permission java.security.AllPermission;
};

with this entry all permision will be set to the classes in test/WEB-INF/classes/ directory; if you whish to apply specialized permisions you can customize
"permission java.security.AllPermission;" line

eg:
permission java.net.SocketPermission "localhost:9001", "connect"

for socket permision

Fixing sudo error: sudo: must be setuid root

2007-08-28T20:11:00.000-07:00

The error was


sudo: must be setuid root

to fix that problem
log in to a virtual terminal as root
and type


chmod 4111 /usr/bin/sudo

Set proxy enviorentment variable in a python script

2007-08-28T20:08:00.000-07:00

import os
os.environ['http_proxy']='http://192.248.16.90:3128'

Interactive python shell

2007-08-28T19:59:00.000-07:00

Crate an ~/.inputrc file and set editing-mode vi set horizontal-scroll-mode on.

Create PYTHONSTARTUP file called ~/.pythonstartup and export the path to that file in ~/.barshrc : PYTHONSTARTUP=/home/nayanajith/.pythonstartup.

Give pth from /. then the python shell work in vi line eddting mode when pressing Esc key.

Olso it gives the auto completion facility with the tab key

New customization to rox desktop and slim

2007-08-16T05:18:00.001-07:00

I added some of my works to customize.org
slim login themes

icon themes for rox desktop

more info and downloads at
http://customize.org/nayanajith

Founded Lanka IT Revolution Community (LKReC)

2007-07-30T00:36:00.000-07:00

With the evolution of Information technology, it getting generalized in the society, means the people getting more familiar with that by time. Advance concepts and technologies we learned in universities have become easy to learn for the school students. While some students already in the stream, some students still don't know how to start learning and keep going.

To help them with choosing the suitable path to their career and to make them keep going, We hope to be the linkers of them to share there knowledge, helpers when they need some hand and motivators to keep excitement of learning.

Though the mission mostly focused on the school students or the younger generation, others who interested can participate the community with there ideas and visions. They also can get hand from this community.

The first seminar:

First seminar was held at Piliyandala central college on last Friday. That was very interesting and the feedback was more than we expected. The students were happy and had long Q&A session at the end.

3d desktop wallpaper in FVWC-Crystal

2007-07-30T00:21:00.000-07:00

Renewed recipe with windows thumbnails with default recipe:

Simple script to add icons to idesktop

2007-07-19T03:37:00.000-07:00

#!/bin/bash
cd ~/.idesktop
command=""
icon=""
caption=""
####using function#####
message=""
input=""
function requestUserInput() {
while true; do
echo $message
read input

if [ -z $input ] 2> /dev/null
then
continue
else

echo "You entered \"$input\" "
echo "Continue? [y/n]: "
read ans
if expr $ans = y > /dev/null
then
break
else
continue
fi
fi
done
}

#request caption
if [ $# -eq 0 ]; then
message="Caption: "
requestUserInput
caption=$input
else
caption=$1
fi

#request command
message="Command: "
requestUserInput
command=$input

#request icon
#rox icons&
message="Icon: "
icon=$( zenity --entry --text "Drag and Drop the Image here:" --title Image);
#requestUserInput
#icon=$input

echo "table Icon
Caption: $caption
Command: $command
Icon: $icon
Width: 48
Height: 48
X: 0
Y: 0
end" > $caption.lnk

Faast and cool Desktop with fluxbox idesk xcompmgr

2007-07-19T03:25:00.000-07:00

Faaast, pretty, transparent and shadowed GNU/Linux with fvwm-crystal ROX-Filer and xcompmgr

2007-07-15T22:49:00.001-07:00