Ubuntu How to Change Hostname?

Start a new terminal to see the new hostname.

For Ubuntu server without a GUI, run sudo vi /etc/hostname and sudo vi /etc/hosts and edit them one by one.

In both files, change the name to what you want and save them.

Finally, restart your computer to apply the changes.

How can I change hostname in Ubuntu 18.04 permanently?

Ubuntu 18.04 LTS change hostname permanently

• Type the hostnamectl command : sudo hostnamectl set-hostname newNameHere. 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: sudo reboot.

How can I permanently change my hostname in Linux?

Change a server’s hostname

1. Using a text editor, open the server’s /etc/sysconfig/network file.
2. Modify the HOSTNAME= value to match your FQDN hostname, as shown in the following example: HOSTNAME=myserver.domain.com.
3. Open the file at /etc/hosts.
4. Run the hostname command.