Command-Line Network Interface Configuration
You can configure a network interface from the command line using the basic Linux networking utilities. You configure your network client hosts either with commands to change your current settings or by editing a number of system files. Two commands, ifconfig and route, are used for network configuration. The netstat command displays information about the network connections.
/sbin/ifconfig
ifconfig is used to configure your network interface. You can use it to do the following:
Activate or deactivate your NIC or change your NIC’s mode
Change your machine’s IP address, netmask, or broadcast address ...
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