Command: ifconfig -a wlan0
Output:
	wlan0     	Link encap:Ethernet  HWaddr 74:da:38:41:37:82
 			UP BROADCAST MULTICAST  MTU:1500  Metric:1
          		RX packets:0 errors:0 dropped:361 overruns:0 frame:0
          		TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          		collisions:0 txqueuelen:1000
          		RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)