How to change MAC address in linux

To change the mac address in RHEL,Centos or any linux based operating system please follow these steps:-

 Steps for changing MAC address temporarily

 step1:- First turn off the network interface 

 step2:- Change the desired MAC address but which should be hexadecimal format XX:XX:XX:XX:XX:XX

 step3:- Turn on the network interface

 step4:- Check the status of the MAC address

 # ifconfig eth0 down

 # ifconfig eth0 hw ether 00:11:09:9B:83:C8

 # ifconfig eth0 up

 # ifconfig eth0 |grep HWaddr