Linux set IP address and default gateway

1. Set the IP address

Open the terminal and get root privileges (sudo su). Enter the command:

# ifconfig eth0 192.168.0.20 netmask 255.255.255.0

Explanation: Ifconfig---set IP commands

Eth0---The network card to be set up, you can only enter Ifconfig to view the installed NIC

192.168.0.20---The pre-set IP value.

netmask 255.255.255.0---subnet mask

2. Set the default gateway

Open terminal, get root permission (sudo su), enter command:

# route add default GW 192.168.1.1

Explanation: Route Add---Add routing commands

Default GW---Increased routing items to the Defaults gateway

192.168.1.1---The IP address of the default gateway

3. Boot automatically set IP, gateway.

Linux boot will execute the/etc/init.d/rcs script, open the RCS script, the above two commands added to the script, the RcS file contents are as follows:

#! /bin/sh
#
# RcS
#
# call all S?? * Scripts in/etc/rcs.d/in numerical/alphabetical Order
#
Ifconfig eth0 192.168.0.20 netmask 255.255.255.0

Route add default GW 192.168.1.1
EXEC/ETC/INIT.D/RC S