First find the physical MAC address of your machine by running the following command :
$ ifconfig -a | awk '/HWaddr/ {print "interface: " $1 "/t MAC: " $NF}'
interface: eth0/t MAC: 4e:97:0e:52:29:13
interface: wlan0/t MAC: 02:ec:b4:e1:dc:31
The hexadecimal numbers in blue denote machine's MAC address.
Now, login as root in Linux or use sudo before each command and execute it.
# ifconfig eth0 down
# ifconfig eth0 hw ether 3c:97:0e:11:21:71
# inconfig eth0 up
# ifconfig eth0 | awk '/HWaddr/ {print "interface: " $1 "/t MAC: " $NF}'
I have changed my Mac address to "3c:97:0e:11:21:71".
Note : This is the temporary change. Once you reboot your machine, the operating system will change the MAC address to the default.
