Having just starting using Ubuntu I have been needing to do some basic setup options to put my laptop on the network at the office. We use Mac Address based security and so I needed to find mine for the ethernet card.
Looking through all the administration options to find it was unsuccessful and it was definately not as obvious to find as I hoped. After trawling through the Ubuntu Forums and reading about 9 threads I found you simply need to go to Terminal (which is located under Applications>Accessories) and then type in ifconfig and press enter, and you will get a list of your hardware address for your network card.

5 responses so far ↓
1 Greg // Jun 16, 2009 at 2:57 pm
New to Ubuntu —was searching for the same information. Thank you for sharing.
2 Márcio // Jul 31, 2009 at 11:16 pm
Thank you. I was searching for the same information, too =)
3 Chris // Nov 2, 2009 at 3:15 am
Same here, thanks.
4 Philippe // Nov 7, 2009 at 1:37 pm
Also new to linux. Thank you from France for this information.
5 Derek // Jan 23, 2010 at 12:59 am
ifconfig
will give you a HWaddr which is your MAC address
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