How to change “HOSTNAME” Permanently and Temporary in Linux

In the computer world, we assign a name to computers as we do to humans. This is called hostname. So in this article, I will show you how to Change Hostname in Linux / Unix operating system. it’s very simple. we have two ways to do this job.

Change Hostname in Linux

1. Permanent way: (after the change we need to restart the system)

2. Temporary way: (temporary way effect immediately and when you reboot your system the changes are removed as default)

NOTE:-Before applying changes, you must check your current hostname using the “hostname” command. The Hostname command shows you the present hostname of your system.

Permanently

1. Permanent way:- Change your hostname, and edit your network file using the below command.

#vi /etc/sysconfig/network

HOSTNAME=NEW_HOSTNAME.COM (give HOSTNAME WHICH IS YOU WANT TO SET)

Then save the file and exit, Now reboot your system then you check your hostname, it’s changed permanently.

#hostname (to check your current hostname)

Temporary

2. Temporary way:- you can use the “hostname” command to change the existing hostname temporarily.

#hostname ocptechnology.com (your new hostname)

Then check

#hostname (to check your current hostname)

Read - How to configure yum server

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