MySQLdump is very effective tool to collection of databases for backup or restore into another SQL server. There are three general ways to use mysqldump command in Linux server.

History will shows the list of commands which you have executed previously. Would you like to view information on when you executed these commands,

Tmpwatch tool is analyze and recursively delete files which have not been used certain period of time, especially clean up unwanted backup or /tmp directory or unused files.

Yes, its possible to be change user home directory. By default the user working directory creating in /home, do you like to modify following below steps.

When you try to install any packages like yum install httpd its shows error like,

Netstat command is helpful for display information related to network connections, both incoming and outgoing , routing tables, interface statistics security issues connections and so on.

Exim is a message transfer agent (MTA) for hosts that are highly comfortable and running in Unix or Linux Operating system.