You can use the hostname command to see or set the system’s host name. The host name or computer name is usually at system startup in /etc/hostname file. Open the terminal application and type the following command.
Display the current Ubuntu hostname
Simply type the following command:
Ubuntu change hostname command
The procedure to change the computer name on Ubuntu Linux:
- Type the following command to edit /etc/hostname using nano or vi text editor:
sudo nano /etc/hostname
Delete the old name and setup new name.
- Next Edit the /etc/hosts file:
sudo nano /etc/hosts
Replace any occurrence of the existing computer name with your new one.
- Reboot the system to changes take effect:
How to change the Ubuntu server hostname without a system restart?
Type the following commands:
$ sudo hostname new-server-name-here
Next edit the /etc/hostname file and update hostname:
$ sudo nano /etc/hostname
Finally, edit the /etc/hosts file and update the lines that reads your old-host-name:
$ sudo nano /etc/hosts
Save and close the file.