Use shell command

If the Ubuntu Server installer has set your server to use DHCP, you will want to change it to a static IP address so that people can actually use it.

Changing this setting without a GUI will require some text editing, but that ?s classic linux, right?

Open up the /etc/network/interfaces file

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vi /etc/network/interfaces

For the primary interface, which is usually eth0, you will see these lines:

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auto eth0
iface eth0 inet dhcp

As you can see, it ?s using DHCP right now. We are going to change dhcp to static, and then there are a number of options that should be added below it. Obviously you ?d customize this to your network.

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## The primary network interface
auto eth0
iface eth0 inet static
address xxx.xxx.xxx.xxx
netmask xxx.xxx.xxx.xxx
gateway xxx.xxx.xxx.xxx
dns-nameservers xxx.xxx.xxx.xxx

Now we will just need to restart the networking components:

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sudo /etc/init.d/networking restart