TRickZ And TipS

# grep --color 'jishnus account ' /etc/passwd : show the selected colour in colour

pkill -KILL -u {username:: logout any user 

The /etc/rc.d/rc.local : To add startup programs

script is executed by the init command at boot time or when changing runlevels. Adding commands to the
bottom of this script is an easy way to perform necessary tasks like 
starting special services or initialize devices without writing complex 
initialization scripts in the /etc/rc.d/init.d/ directory and creating symbolic links.