At some point in your life, you may find it a need to manually assign an IP address to your computer. What if it’s LINUX? You’d better have an idea of what you’re going to do or shame on you. Assuming, you only know the basic commands on a Linux system, here’s a quick how-to to help you out.
Here’s how to do it and you should be logged in as a root user. Type the following on your CLI (Command Line Interface)
ifconfig eth0 192.168.100.1 netmask 255.255.0.0 up
ifconfig – declares the command.
eth0 – is the interface card. This depends on how many interfaces you have and which interface you are using.
192.168.100.1 – the IP address we are trying to assign statically. You can change it, of course.
netmask – option for a subnet mask.
255.255.0.0 – the subnet mask. You can change this too.
up – the state of the interface after the command execution
Here’s another way. Make changes on the actual interface configuration. Type the following command to open the interface card configuration.
vi /etc/sysconfig/network-scripts/ifcfg-eth0
This is what you should see after entering the command above:
# DEVICE=eth0 HWADDR=00:8A:63:D7:54:C3 ONBOOT=yes IPADDR=172.20.60.244 NETMASK=255.255.0.0 GATEWAY=172.20.1.1 DNS1=4.2.2.2 DNS2=4.2.2.1 BOOTPROTO=none USERCTL=no
Change the IPADDR, NETMASK and GATEWAY. Save it and restart the network services by typing:
service network restart
That’s it! You’re good to go.
