Manually configure the Linux (centos) IP Address

The IP address of the Linux Nic is stored in the file. The configuration file is stored in/etc/sysconfig/network-scripts,
The names are ifcfg-eth0, ifcfg-eth1 .... if you have a network card, there is only one ifcfg-eth0 file, if you have two or more of the network card, there will be a ifcfg-eth1, ifcfg-eth2 and other files.
File structure:

1. VI/etc/sysconfig/network-scripts/ifcfg-teh0

Device = eth0 // specify the device name
Bootproto = static // Startup Type DHCP
Broadcast = 192.168.1.255 // broadcast address
Hwaddr = 00: 06: 5b: Fe: DF: 7C // hardware MAC address
Ipaddr = 192.168.0.2 // ip address
Netmask = 255.255.255.0 // Subnet Mask
Network = 192.168.0.1 // network address
Onboot = Yes // whether to start the application
Type = Ethernet // network type

2. Start Service Network restart