ifconfig eth0:0 192.168.1.50 netmask 255.255.255.0 broadcast 192.168.1.255
ifconfig -a
eth0:0 Link encap:Ethernet HWaddr 00:90:CC:12:EC:23
inet addr:192.168.1.50 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Interrupt:11 Base address:0xa00