I am a new Ubuntu Linux laptop user. I setup my computer name to ‘tom’ during installation but now I would like to change the computer name to ‘jerry’. Can you tell me how do I I remove tom and set it to jerry on Ubuntu Linux? How do I change the Ubuntu computer name from ‘ubuntu’ to ‘AvlinStar’? Can you tell me more about Ubuntu Linux change hostname command?
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 commands to set or change hostname or computer name on Ubuntu.
Display the current Ubuntu hostname
Simply type the following command: $ hostname Sample outputs:
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: sudo reboot
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 From: 127.0.1.1 old-host-name To: 127.0.1.1 new-server-name-here Save and close the file.
Ubuntu Linux Change Hostname Using hostnamectl
Systemd based Linux distro such as Ubuntu Linux 16.04 LTS and above can simply use the hostnamectl command to change hostname. To see current setting just type the following command: $ hostnamectl Sample outputs:
The author is the creator of nixCraft and a seasoned sysadmin, DevOps engineer, and a trainer for the Linux operating system/Unix shell scripting. Get the latest tutorials on SysAdmin, Linux/Unix and open source topics via RSS/XML feed or weekly email newsletter.