Code snippets from my blog (http://ninad.pundaliks.in/blog)

1.sh

$: echo -e "\ahi \nsent by user" > /dev/tty1

2.txt

hi
sent by user

3.sh

$ echo -e "Bringing down eth0 interface in 5 mins \a.\nPlease log out!\n-Admin">/dev/pts/1

amarok_jaunty_ppa.txt

#Launchpad ppa's for amarok 1.4 in jaunty! 
deb http://ppa.launchpad.net/bogdanb/ppa/ubuntu jaunty main 
deb-src http://ppa.launchpad.net/bogdanb/ppa/ubuntu jaunty main

amarok_tips.sh

$ dcop amarok player play
$ dcop amarok player stop
$ dcop amarok player isPlaying
$ dcop amarok player mute
$ dcop amarok player setVolume [volume in percentage]

bash_tips_1.sh

$ cat UbuntuCodeofConduct-1.0.1.txt | grep name | wc -l 
15

bash_tips_2.sh

alias ls='ls --color=auto'
alias dir='ls --color=auto --format=vertical' 
alias vdir='ls --color=auto --format=long' 
alias ll='ls -l' 
alias la='ls -A' 
alias l='ls -CF'

cpu_temp.sh

#!/bin/bash

cat /proc/acpi/thermal_zone/THRM/temperature;
exit 0;

df_1.sh

ninad@ml-228:~$ df -h
Filesystem            Size  Used Avail Use% Mounted on 
/dev/sda6              15G  9.9G  4.1G  71% / 
varrun                696M  136K  696M   1% /var/run 
varlock               696M     0  696M   0% /var/lock 
procbususb            696M   52K  696M   1% /proc/bus/usb 
udev                  696M   52K  696M   1% /dev 
devshm                696M     0  696M   0% /dev/shm 
lrm                   696M   38M  659M   6% /lib/modules/2.6.24-16-generic/volatile 
/dev/sda5              61G   49G  9.5G  84% /home
/dev/sda1              20G   20G     0 100% /media/sda1
/dev/sda2              15G   14G  1.9G  88% /media/sda2

FlxZipArchive.php

<?php
/**
* FlxZipArchive, Extends ZipArchiv.
* Add Dirs with Files and Subdirs.
*
* <code>
*  $archive = new FlxZipArchive;
*  // .....
*  $archive->addDir( 'test/blub', 'blub' );
* </code>
*/
class FlxZipArchive extends ZipArchive {
    /**
     * Add a Dir with Files and Subdirs to the archive
     *
     * @param string $location Real Location
     * @param string $name Name in Archive
     * @author Nicolas Heimann
     * @access private
     **/

    public function addDir($location, $name) {
        $this->addEmptyDir($name);

        $this->addDirDo($location, $name);
     } // EO addDir;

    /**
     * Add Files & Dirs to archive.
     *
     * @param string $location Real Location
     * @param string $name Name in Archive
     * @author Nicolas Heimann
     * @access private
     **/

    private function addDirDo($location, $name) {
        $name .= '/';
        $location .= '/';

        // Read all Files in Dir
        $dir = opendir ($location);
        while ($file = readdir($dir))
        {
            if ($file == '.' || $file == '..') continue;

            // Rekursiv, If dir: FlxZipArchive::addDir(), else ::File();
            $do = (filetype( $location . $file) == 'dir') ? 'addDir' : 'addFile';
            $this->$do($location . $file, $name . $file);
        }
    } // EO addDirDo();
}
?>

flxziparchive_usage.php

<?php
//Don't forget to remove the trailing slash

$the_folder = '/path/to/folder/to/be/zipped';
$zip_file_name = '/path/to/zip/archive.zip';

$za = new FlxZipArchive;

$res = $za->open($zip_file_name, ZipArchive::CREATE);

if($res === TRUE) {
    $za->addDir($the_folder, basename($the_folder));
    $za->close();
}
else
    echo 'Could not create a zip archive';
?>

free_1.sh

ninad@ml-228:~$ free -m 
total       used       free     shared    buffers     cached 
Mem:          1391       1359         31          0         56        765 -/+ buffers/cache:        538        853 
Swap:         1019        459        559

grep_1.sh

website/dir$:cat * | grep [your string goes here]

grep_2.sh

ps -A | grep [process name]

imagemagick_1.sh

#!/bin/bash
# Timepass script to experiment with imagemagick

for x in 0 1 2 3 4 5 6 
do
  convert -size 100x100 plasma:fractal -font Helvetica-Bold -pointsize 90 -tile gradient:white-gray -stroke white -annotate +26+78 $x $x.jpg;
  echo -e "$x.jpg generated\n";
done;

unset x;
exit 0;

imagemagick_2.sh

convert -size 150x150 xc:none -background none \
-fill white -stroke grey60 \
-draw "rectangle 0,0 110,110" 0.jpg \
-geometry +5+5 -composite -rotate -10 \
-draw "rectangle 0,0 110,110" 1.jpg \
-geometry +5+5 -composite -rotate -10 \
-draw "rectangle 0,0 110,110" 2.jpg \
-geometry +5+5 -composite -rotate -10 \
-draw "rectangle 0,0 110,110" 3.jpg \
-geometry +5+5 -composite -rotate -10 \
-draw "rectangle 0,0 110,110" 4.jpg \
-geometry +5+5 -composite -rotate -10 \
-draw "rectangle 0,0 110,110" 5.jpg \
-geometry +5+5 -composite -rotate -10 \
-draw "rectangle 0,0 110,110" 6.jpg \
-geometry +5+5 -composite -rotate +10 \
-trim +repage -background gray -flatten \
poloroid_spread.gif

jauntied.sh

$ sudo mount /path/to/jaunty/iso /cdrom -o loop 
$ sudo ./cdromupgrade 

lucid_upgrade_1.sh

$ cd /etc/apt/ 
$ sudo mv sources.lst.d/ sources.lst.d.backup/ 
$ sudo mkdir sources.lst.d

lucid_upgrade_2.sh

$ sudo aptitude install dpkg apt aptitude 
$ sudo aptitude safe-ugrade 
$ sudo aptitude full-upgrade

montage_1.sh

$ cd /home/user/.psi/avatars
$ montage -background "#9DAABA" -frame 10 -mattecolor "#FFFFFF" -shadow * /home/user/montage.jpg

nslookup_1.sh

Server:         127.0.0.1
Address:        127.0.0.1#53

Non-authoritative answer:
Name:   google.com
Address: 64.233.187.99
Name:   google.com
Address: 72.14.207.99
Name:   google.com
Address: 64.233.167.99

shell_quirk_1.sh

if [ ! -d “/path/to/dir” ] ; then
  mkdir -p /path/to/dir;
  echo “Directory did not exist.  Created”;
fi;

shell_quirk_2.sh

if [ -d “/path/to/dir” ] ; then
  #do nothing
else
  mkdir -p /oath/to/dir;
  echo “Directory  did not exist.  Created”;
fi;

tweet.js

$(document).ready(function()	{
  $("#response").hide();
  $("#submit").click(function(event) {
    event.preventDefault();
    $("#response").text("Processing...").show("slow");
    $.ajax({ type: 'POST',
            url: 'twitter_ajax.php',
            data:{ajax_req: true,
                  username: $("#username").val(),
                  password: $("#password").val(),
                  status: $("#status").val()
                 },
            success: function(data){
              var output = "";
              output += "Tweet ID : "+data.id+"<br />";
              output += "Text : "+data.text+"<br />";
              output += "Username : "+data.user.name+"<br />";
              $("#response").html(output);
            }
           })
  });
});

twitter.html

<html xmlns="http://www.w3.org/1999/xhtml">
  <body>
    <fieldset>
      <legend>Twitter Details</legend> 
      <ul> 
        <li>
          <label for="username">Username: </label>
          <input id="username" name="username" type="text" />
        </li> 
        <li>
          <label for="password">Password: </label>
          <input id="password" name="password" type="password" />
        </li>
        <li> 
          <label for="status">Status: </label> 
          <textarea id="status" name="textarea"> </textarea>
        </li>
        <li>
          <input id="submit" name="submit" type="submit" value="Post Tweet" />
        </li>
      </ul>
    </fieldset>
    <div id="response"></div>
  </body>
</html>

twitter_ajax.php

<?php
if($_REQUEST['ajax_req'] == true)
{
  //Process the tweet
  $username = $_REQUEST['username'];
  $password = $_REQUEST['password'];
  $status = $_REQUEST['status'];
  $auth_string = $username.":".$password;
  $postdata = array('status' => $status );
  $options = array(
    CURLOPT_RETURNTRANSFER  =>  true,
    CURLOPT_POST    =>  true,
    CURLOPT_POSTFIELDS  =>  $postdata,
    CURLOPT_SSL_VERIFYPEER  =>  false,
    CURLOPT_URL   =>  'https://twitter.com/statuses/update.json',
    CURLOPT_USERPWD =>  $auth_string
  );  
  $ch = curl_init();
  curl_setopt_array($ch, $options);
  $data = curl_exec($ch);
  curl_close($ch);
  Header('Type: application/json')
  die($data);
}
?>

uptime.sh

ninad@ml-228:~$ uptime
18:06:43 up 5 days,  6:24,  1 user,  load average: 0.47, 0.39, 0.28

who.sh

$ who
user    tty2         2008-08-25 01:19
root     tty1         2008-08-25 01:19
user    :0           2008-08-22 13:31
root     pts/1      2008-08-22  14:32  (172.34.2.12)

who_1.sh

ninad@ml-228:~$ who -b 
system boot  2008-08-15 11:45

who_2.sh

ninad@ml-228:~$ who 
ninad    :0           2008-08-15 11:45