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Any help will be appreciated.

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up vote 17 down vote accepted

Open a terminal and run ifconfig:

$ ifconfig | grep HWaddr
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by the way, do you know what the "if" of "ifconfig" stands for? – Tom Brito Jul 16 '10 at 15:58
3  
ifconfig is short for "Interface Configurator" – Brian Kintz Jul 16 '10 at 16:10

Try ifconfig, and look at the "HWaddr".

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okay, this is a very easy solution. 1/ Open a terminal 2/ ifconfig A list of network capable devices will be displayed. If you are using wireless, it usually is called wlan0, but can also be named pan0 wifi0 etc. A physical conection is most likely eth0. on the first line you will see your mac address. here is a sample of what you might see eth0 Link encap:Ethernet HWaddr 00:00:00:00:00:00

that's it.

You can spoof your mac address too with macchanger (sudo aptitude install macchanger) just type man macchanger to learn more

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You can also right-click on the GNOME Network Manager. There you choose connection information and the following window shows you the hardware address. See also NetworkManager at Ubuntus Wiki.

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