How to change the hostname on Linux

Introduction

A hostname is a unique identifier that is assigned to a device on a network. This name is used to identify the device on the network, and it’s a unique identifier that helps to distinguish one device from another. On Linux, the hostname is stored in a number of different places, including the /etc/hostname file and the DNS server.

we can change the hostname with two methods

1. Via command line
2. Via GUI (Graphical User Interface)

Method One

Changing the hostname on Linux using the command line

One of the most popular and efficient ways to change the hostname on Linux is by using the command line. The process involves editing the /etc/hostname file and the /etc/hosts file, and using the hostnamectl command.

How to get hostname in linux command

you can get hostname with hostname command

hostname

Changing the hostname on Linux

Step-by-step instructions on how to change the hostname on Linux.

Step 1: Open a terminal window.

Step 2: Run the command

sudo hostnamectl set-hostname [Your Name] 

in my case i am using "Protechtuts" for the hostname.

sudo hostnamectl set-hostname Protechtuts

Step 3: Finally, reboot your system for the changes to take effect by running sudo reboot.

Method Two

Step 1: Open Windows, the hostname can be changed.

Step 2: Checking hostname

How to check hostname in linux terminal

Step 2: Change hostname

Conclusion:

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It is important to note that the /etc/hostname file contains the hostname of the system, while the /etc/hosts file contains a mapping of IP addresses to hostnames. So, by editing both files and using the hostnamectl command, you are ensuring that the hostname change is reflected in all the relevant locations. if you fine some more deepdive to