Change Host Name in Ubuntu Server
added by Johan 1/23/13

You might run into a situation that requires you to change your computer name.

By following these steps, you’ll give your computer a new identity in no time.

1. In a terminal window:
sudo su
enter your password

2. Input the following command:
  nano /etc/hostname

3. The hostname file will open, displaying the current computer name.
Replace the current computer name with the desired new name
(In my case it was

5. Click Ctrl-X, then "Y".

6. reboot -h now

7. To check the hostname after a reboot, enter:
hostname -f
which will show the fully qualified host name