This article explains how to find MAC address of the PC in Linux, Windows, FreeBSP, NetBSP, OpenBSD, Caldera/SCO, IRIX, HP-UX, NeXTStep, AIX, Tru64 UNIX etc.Typically each Ethernet adapter in the world is programmed with an unique MAC address by the manufacturer. In other words, no two Ethernet adapters will have same MAC address.

In Linux (Fedora/Ubuntu/Other flavours)

[neo@techpulp ~]# ifconfig eth0
eth0      Link encap:Ethernet  HWaddr 00:A3:B2:01:5E:4B
inet addr:192.168.1.2  Bcast:192.168.1.255  Mask:255.255.255.0
...

If you have more than one Ethernet adapters in the system, you can use “ifconfig -a” command.

In Microsoft Windows NT/2000/2003/XP Open Run Command Window by pressing R while holding Windows Start Key. Otherwise Click More >