shell scripts

How to increase ULIMIT?

* hard nofile 4096

How to Create mp3 Files using google api?

<?php

/*---------------------------------------------------

Text To Speech using Google API

----------------------------------------------------*/

// Google Translate API cannot handle strings > 100 characters

$words = substr($_GET['words'], 0, 100);

$words = urlencode($_GET['words']);

$file = date('Ymdhis') . ".mp3";

if (!file_exists($file)) {

$mp3 = file_get_contents(

'http://translate.google.com/translate_tts?q=' . $words;

file_put_contents($file, $mp3);

}

?>

// Embed the MP3 file using the AUDIO tag of HTML5

<audio controls="controls" autoplay="autoplay">

<source src="<? echo $file; ?>" type="audio/mp3" />

</audio>

Delete files older then n days

Process to Delete files from a directory where file is older than 'n' days.

Recommended you to the list the files and check before deleting them, by running the following command first:

find /path/to/files* -mtime +2 -exec ls {} \;

Run the following command to delete

find /path/to/files* -mtime +2 -exec rm {} \;

Note:

• There are spaces between rm, {}, and \;
• +2 means files older than 2 days

You can also use the following command to schedule the cron job(in this example the command will run every night at 1am.

00 01 * * * find /path/to/files* -mtime +2 -exec rm {} \;

A PHP program to find the CPU and Memory Load

<?php

function get_server_memory_usage(){

$free = shell_exec('free');

$free = (string)trim($free);

$free_arr = explode("\n", $free);

$mem = explode(" ", $free_arr[1]);

$mem = array_filter($mem);

$mem = array_merge($mem);

$memory_usage = $mem[2]/$mem[1]*100;

return $memory_usage;

}

function get_server_cpu_usage(){

$load= shell_exec("ps aux|awk 'NR > 0 { s +=$3 }; END {print \"cpu %\",s}'");

return $load;

}

echo 'Server Memory Usage:' . get_server_memory_usage() ;

echo PHP_EOL;

echo 'Server CPU Usage:' . get_server_cpu_usage();

?>

A Program to convert WAV file to GSM and upload it to ftp server.

#!/bin/bash

for x in /home/odn1/jakarta-tomcat-5.5.7/webapps/ROOT/voicetap/rec/callrec/*.wav

do

recdir=/home/odn1/jakarta-tomcat-5.5.7/webapps/ROOT/voicetap/rec/callrec/

gsmdir=/home/odn1/jakarta-tomcat-5.5.7/webapps/ROOT/voicetap/rec/callrec/uploaded/

i=${#x}

j=`expr ${#recdir} + 1`

l=`expr $i - $j`

k=`expr $l - 3`

filename=`expr substr $x $j $k`

#len =`expr $i -$j`

exten=".gsm"

f=$gsmdir$filename$exten

sox $x $f

done

cd /home/odn1/jakarta-tomcat-5.5.7/webapps/ROOT/voicetap/rec/callrec/uploaded/

HOST='10.201.1.114'

USER='sandy'

PASSWD='banti'

FILE='*.gsm'

ftp -n $HOST <<END_SCRIPT

quote USER $USER

quote PASS $PASSWD

prompt off

mput $FILE

bye

END_SCRIPT

rm *.gsm

========================================

A PHP script to merge to wav file

Command to execute /usr/bin/php filemerge.php /sandip/prompts/sourcepath1 /sandip/prompts/sourcepath2 /sandip/prompts/destination

script.name sourcepath1 sourcepath2 destinationpath

Code

-----------------------------

#!/usr/bin/php -q

<?php

$sourcepath1=$argv[1];

$sourcepath2=$argv[2];

$destinationpath=$argv[3];

echo $sourcepath1."\n".$sourcepath2."\n".$destinationpath."\n";

//exit();

if ($handle1 = opendir($sourcepath1))

{

if ($handle2 = opendir($sourcepath2))

{

if ($handle3 = opendir($destinationpath))

{

/* This is the correct way to loop over the directory. */

while (false !== ($file = readdir($handle1)))

{

$phoneno=substr($file,0,10);

echo $phoneno;

if(strlen($file)<4)

{

echo "No File available to process\n";

exit();

}

$command="sox ".$sourcepath1."/".$phoneno.".wav ".$sourcepath2."/".$phoneno.".wav ".$destinationpath."/".$phoneno.".wav";

echo rtrim($command,2)."\n";

shell_exec(trim($command));

}

closedir($handle3);

}

else

{

echo "Either Destination Path doesn't exist or We don't have the permission to access the path";

}

closedir($handle2);

}

else

{

echo "Either Source Path 2 doesn't exist or We don't have the permission to access the path";

}

closedir($handle1);

}

else

{

echo "Either Source Path 1 doesn't exist or We don't have the permission to access the path";

}

?>

========================================

Getting CURL working on XAMPP

1. Go to xampp install directory.
2. Go to php.ini in php directory.
3. Open php.ini and find curl, uncomment the first find you see. Save and close file.
4. Go to php.ini in apache directory.
5. Repeat Step Three.
6. Done.

A program to check whether a process is running or not by PHP program.

#!/usr/bin/php -q

<?php

$cmd = "ps aux|grep vsftpd";

exec($cmd, $output, $result);

print_r($output);

if(count($output) > 2){

echo 'process is running';

}else

{

echo 'process is not running';

}

?>

PHP file not executing from command line

Error : Extension './searchdbkenya.php' not present.

Solution: edit file with vi

Press :(colon) Type set ff=unix

Google Email account for Free.

https://www.google.com/a/cpanel/domain/new

How to reset the nagiosadmin password

sudo htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin

HOW TO CREATE A SOFTLINK

ln -s <source path> <destination>

HOW TO CHANGE THE TIME ZONE IN CENTOS/LINUX?

• mv /etc/localtime /etc/localtime.bak
• ln -s /usr/share/zoneinfo/Africa/Nairobi /etc/localtime
• date -s 21:38:00 (To set the date)