How to Change MAC Address on Ubuntu

1. 1
   Open Terminal.
    
2. 
   2
   Log in as root so type: sudo -i and then write your password.
    
3. 
   3
   View your current address by typing: ip link show
    
4. 
   4
   Set the device down to avoid problems. Type: ip link set dev xxxx down where xxxx is the name of device you want to set down, so for example: ip link set dev wlan0 down
    
5. 
   5
   Change your MAC address. Write into terminal this: ip link set dev xxxx address xx:xx:xx:xx:xx:xx where xxxx is the device and xx:xx:xx:xx:xx:xx is your new MAC address, so it will looks for example like: ip link set dev wlan0 address 74:d0:3b:9f:d8:48
    
6. 
   6
   Set up your device so type: ip link set dev xxxx up, where xxxx is the name of your device
    
7. 7
   Step by step: