How to find MAC address in Ubuntu?

Question

I am trying

ifconfig | grep HWaddr

it gives me output in two lines

enp0s31f6 Link encap:Ethernet  HWaddr d8:9q:26:7d:34:ff  
wlp1s0    Link encap:Ethernet  HWaddr f8:71:38:53:e9:1p  

Which one is my MAC address ?

Solution

Both. You have two network interfaces, hence the two lines.

• enp0s31f6 is most probably a wired interface, its MAC is d8:9q:26:7d:34:ff,
• wlp1s0 is a wireless interface, its MAC is f8:71:38:53:e9:1p.