How to Change Hostname in Ubuntu 18.04 LTS Permanently?

Method 1: By using command way:-

Step 1: Right click on the desktop, and then click on 'Open terminal.'

Step 2: Run the command below:-

sudo hostnamectl set-hostname your-new-hostname

Step 3: Open the /etc/hosts file by command below, and then change the old hostname to the new one.

sudo nano /etc/hosts

Step 4: Save the file, and exit from nano editor.


Method 2: By Using GUI way:-

Step 1: Click on Panel at the top right.

Step 2: Click on Settings, and then click on 'Details,' and then click on 'About.'

Step 3: In order to change the hostname, change the device name there, and close the settings window.

Step 4: Now, Go to terminal again, open the hosts file and change host name there also.



It's done


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