How to change the computer name in linux

Follow me if you want to change the computer name on Linux
[siwan@localhost ~]$ hostname siwan
hostname: you must be root to change the host name
[siwan@localhost ~]$ su
Password:
[root@localhost siwan]# hostname siwan
[root@localhost siwan]#

close the terminal or command prompt and start again

[siwan@siwan ~]$

your Pc name will be siwan

command : hostname your_desired_computer_name

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