Ubuntu – Change the computer name

To rename a computer running Ubuntu you have to edit the hostname file located in the following directory:

/etc/hostname

To do this, run the following command:

sudo nano /etc/hostname

You then have to reboot the system by issuing the following command:

sudo reboot

When the server comes back up it will have the new hostname.  Some interesting things worth noting:

  • nano is a text editor that comes as a standard part of the Ubuntu server build. VI appears to have a steep learning curve at first glance. I’ll revisit it later.  For now this should do the trick.
  • As opposed to Windows, it does not appear that Ubuntu is going to check and see if there is already a machine on the network with the same name. I’ll need to be careful about this or risk multiple machines with the same name on the network, which could be a DNS headache.
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