Hello! BC> Can someone tell me how to change my system IP Address from the command line in Centos-3? In common situation, "system ip address" is the ETH0 address. So edit /etc/sysconfig/network-scripts/ifcfg-eth0 with your favourite text editor and run service network restart ps don't forget to change default gw also, it's located in /etc/sysconfig/network -- Eugeny aka ZEV.