ifconfig - Linux

OS:

UNIX

Function:

ifconfig

Summary

• The ifconfig command is used to configure parameters of network interfaces on a Linux system, such as enabling and disabling of interfaces and setting the IP address.

Detailed Description

• The ifconfig command is usually run when a system boots up. In this case, the parameters of the commands are read from a file. Once the Linux system is running, the ifconfig command can be used to modify the network configuration parameters.

• Additional useful refrence can be found at webpage for Linux command man pages: http://linux.die.net/man/8/ifconfig

Commands

ifconfig	-Displays the configuration parameters of all active -interfaces.
ifconfig -a	-Displays the configuration parameters of all network interfaces, including the inactive interfaces.
ifconfig interface	-Displays the configuration parameters of all network interfaces, including the inactive interfaces.
ifconfig eth0 down	-Disables the eth0 interface.
ifconfig eth0 up	-Enables the eth0 interface.
ifconfig eth0 10.0.1.8 netmask 255.255.255.0 broadcast 10.0.1.255	-Assigns interface eth0 the IP address 10.0.1.8/24 and a broadcast address of 10.0.1.255

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