How to Change Hostname on Ubuntu 21.04
How do you view your hostname?
Step 1 : You need to use the hostname command or hostnamectl command
hostname
Step 2 : Output from the hostname command
Setting the hostname
Step 1 :Changing the hostname is fairly simple. To do this, we can use the hostnamectl command as root or with sudo.
sudo hostnamectl set-hostname devtutorial
Step 2 : Open the /etc/hosts file and change the old hostname to the new one.
sudo nano /etc/hosts
Step 3 : Verify the change
hostname