Run a script at logout/shutdown/restart on ubuntu 27 Oct 2012 | 08:47 pm

Backup MySQL : Execute database query using PHP file. 26 Oct 2012 | 10:39 pm

Below is an example of using SELECT INTO OUTFILE query for creating table backup $dbhost = ''; $dbuser = ' '; $dbpass = ' '; $conn = mysql_connect($dbhost, $dbuser, $dbpass) or die ('Error connect...

rsync Command 30 May 2012 | 05:10 am

rsync is used to perform the backup operation in UNIX / Linux. rsync utility is used to synchronize the files and directories from one location to another in an effective way. Example : Synchronize.....

Filter mail with postfix header_checks 19 May 2012 | 04:59 pm

First up under /etc/postfix ensure that you have a file called header_checks. If not create it. Next we want to ensure Postfix is configured to use this file so you do this from a command line by ent...

PHP : mysql_real_escape_string() function 19 May 2012 | 04:41 pm

The mysql_real_escape_string() function escapes special characters in a string for use in an SQL statement The following characters are affected Syntax : mysql_real_escape_string(string,connection) ...

Perform SSH Login Without Password 20 Feb 2012 | 05:15 am

 Perform SSH Login Without Password Using only 3 Commands. $ssh-keygen $ssh-copy-id -i ~/.ssh/id_rsa.pub remote_host $ssh remote_host More Detail Click Here

Common Linux log files name and usage 16 Oct 2011 | 10:35 pm

/var/log/message: General message and system related stuff /var/log/auth.log: Authenication logs /var/log/kern.log: Kernel logs /var/log/cron.log: Crond logs (cron job) /var/log/maillog: Mail serv...

Postfix Flush the Mail Queue commands 14 Oct 2011 | 03:05 pm

# postfix flush To see mail queue, enter: # mailq To remove all mail from the queue, enter: # postsuper -d ALL To remove all mails in the deferred queue, enter: # postsuper -d ALL deferred

Install and Configure Mail Server on Linux System 31 Aug 2011 | 04:52 pm

Mail Transfer Agent A Mail Transfer Agent (MTA) is the program which receives and sends out the email from your server, and is therefore the key part. The default MTA in Ubuntu is Postfix, but exim4 i...

Using patch and diff commands 26 Jun 2011 | 06:22 am

Creating patches with diff Using diff is simple when you are working with single files. To create a patch for a single . diff -u file1.txt  new.txt  > new_file.patch For  the directory, use followin...