Linux Configuration network card IP address command and common network configuration commands

Ifconfig eth0 192.168.1.102 netmask 255.255.255.0//Add IP Address

Route add default GW 192.168.1.1//Add Gateway

Start in effect:

Vim/etc/sysconfig/network-scripts/ifcfg-eth0//(Some versions may not have vim this editor such as CentOS, you may replace with VI)

IPADDR=192.168.1.102//Add IP Address

netmask=255.255.255.0//Mask

gateway=192.168.1.1//Add Gateway

The final results are as follows:

Device=eth0

Bootproto=static

ipaddr=192.168.1.102

netmask=255.255.255.0

geteway=192.1 68.1.1

Onboot=yes

Type=ethernet

Note: Bootproto only can use the IP information set in static (static) mode

Modify DNS

Vim/etc/resolv.conf

Can be effective immediately after modification

Form

Join Nameserver= ***.***.***.***

Up to three, as a candidate after the previous failure

Modify Host Name

Immediate effect:

Hostname FC2

Start in effect:

Vim/etc/sysconfig/network

The form is as follows:

Networking=yes

hostname=rh-linux.fc.org

##########################################################

First, understand the traditional network configuration commands:

1. Configure and view network interface conditions using the Ifconfig command

Example 1: Configure eth0 IP and activate the device at the same time:

Ifconfig eth0 192.168.4.1 netmask 255.255.255.0 up

Example 2: Configure IP for the eth0 alias device eth0:1 and add routes

Ifconfig eth0:1 192.168.4.2

Route add–host 192.168.4.2 Dev eth0:1

Example 3: Activating (disabling) a device

Ifconfig eth0:1 up (down)

Example 4: View all (specified) network interface configurations

Ifconfig (eth0)

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