How to upgrade Plesk 10 to Plesk 11 in CentOs 6

Before starting upgrade process please check Plesk 11 system requirement and make sure you have complete backup of your websites and databases. Also, make dump of your plesk database before starting upgrade process. It will require to restore in case something went wrong. Also, please note that most of the time upgrade process fails because…

Change the default SSH port 22

The Secure Shell (ssh) protocol by default uses the port 22. Attackers mostly uses the port 22 in automated attack and changing the default will prevent your server from these automated attack. There are many ways of making your server secure and changing the default ssh port is one of the server hardening. Steps to…

Search Multiple Words or String Pattern

Search is the most important factor which we often used in our daily routine. Some time we need to search multiple words or string in a file, and grep provides the functionality to look into a file and search more than one words. With the combination of grep command and regular expression we can search…