To set up a static IP address in Linux using the command-line interface, you need to modify the network configuration file. The location and name of the file may vary depending on the Linux distribution, but commonly it is
/etc/network/interfaces. Open the file with a text editor and modify the configuration to set a static IP address, subnet mask, gateway, and DNS servers.
For example :
iface eth0 inet static
address 192.168.1.100
netmask 255.255.255.0
gateway 192.168.1.1
dns-nameservers 8.8.8.8 8.8.4.4?
