Configure network settings in linux via terminal

Applies to (Centos, Fedora, Red Hat Enterprise Linux 5)
Simple method:

# ifconfig eth0 192.168.10.12 netmask 255.255.255.0 broadcast 192.168.10.255

Or manually edit configuration files stored in /etc/sysconfig/network-scripts/

You can configure network card by editing text files stored in /etc/sysconfig/network-scripts/ directory. First change directory to /etc/sysconfig/network-scripts/:

# cd /etc/sysconfig/network-scripts/

You need to edit / create files as follows:

• /etc/sysconfig/network-scripts/ifcfg-eth0 : First Ethernet card configuration file
• /etc/sysconfig/network-scripts/ifcfg-eth1 : Second Ethernet card configuration file

To edit/create first NIC file, type command:

Manage Network Interfaces in Linux

Show info:

ifconfig
ifconfig -a or -v
ifconfig eth1

Disable/Enable interface:

ifconfig eth1 down or up
ifdown eth1
ifup eth1