ifconfig -a Output Example

lo   Link encap:Local Loopback  
     inet addr:127.0.0.1  Bcast:127.255.255.255  Mask:255.0.0.0
     UP BROADCAST LOOPBACK RUNNING  MTU:3584  Metric:1
     RX packets:4 errors:0 dropped:0 overruns:0 frame:0
     TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
     Collisions:0 

eth0 Link encap:Ethernet  HWaddr 00:E0:29:36:8B:B5  
     inet addr:153.90.199.4  Bcast:153.90.192.40  Mask:255.255.248.0
     UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
     RX packets:113678 errors:0 dropped:0 overruns:0 frame:0
     TX packets:7802 errors:0 dropped:0 overruns:0 carrier:0
     Collisions:433 
     Interrupt:5 Base address:0x1000