Adding IPs on plain CentOS server ( Unix )

1) cd /etc/sysconfg/network-scripts
2) cp ifcfg-eth0 ifcfg-eth0:0
3) pico ifcfg-eth0:0
4) DEVICE=eth0 will bereplaced to DEVICE=eth0:0
5) IPADDR=69.46.20.77 will be replaced to IPADDR=69.46.20.78
6) exit the file
7) ifup ifcfg-eth0:0
8) same way cp ifcfg-eth0:0 ifcfg-eth0:1 ifcfg-eth0:2 ifcfg-eth0:3 ifcfg-eth0:4 ifcfg-eth0:5
and replace the IPs.