Change Hostname and network in Linux

In Linux, you can use command simply like this to change your hostname

shell#hostname nameyourhost

or directory store your hostname

in RHEL
shell#nano /etc/hosts
in Ubuntu
shell# nano /etc/hostname

in case to edit to static IP

in RHEL Interface for network locate at

nano /etc/sysconfig/network-scripts/interface

in ubuntu

nano /etc/network/interface

add DNS in ubuntu / RHEL

nano /etc/resolv.conf

finally restart your network in linux

/etc/init.d/network restart