ubuntu 18.04 change hostname permanently

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Ubuntu 18.04 LTS Set Hostname Permanently

Ubuntu 18.04 LTS Set Hostname Permanently   In this article I will show how to set hostname in Ubuntu server 18.04 permanently. Lets say my server old hostname is: serv and should be changed to: serv1. Ubuntu Server 18.04 Set hostname   In Ubuntu 18.04 hostnamectl command using