How To Change IPAddress of Linux/Ubuntu ?

Recently I needed to change the existing ipaddress of a linux machine. Since we migrated to our machines in to new cloud servers.

Just follow the steps defined below:

On terminal window type the following command.

   sudo vi /etc/network/interfaces
                or
           sudo gedit /etc/network/interfaces

Then find the eth0 section and set the ipaddress as below

                 auto eth0
                 iface eth0 inet static
                 address 192.168.10.43
                 netmask 255.255.255.0
                 network 192.168.10.46
                 broadcast 255.255.255.0
             Note: Its my own ipaddresses, you have to define your own addresses.

In above file may have " iface eth0 inet dhcp". when you want to define static ip you have to change it to "static". "dhcp" is for dynamic ipaddress.
Then save and close the file, then run the restart the network with this command.

sudo /etc/init.d/networking restart

To ensure ipaddress has been changed just run the command.

ifconfig eth0

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