[Last procedure check : 2020-07-13 ]
I re-write the procedure since there are many questions about linux install procedure.
Many of them are no more applicable today and the getmangos.sh script needs rework as I write this article.
I am assuming you are running your server on a Linux Operating system with Ubuntu Server 18.04 flavor.
Your OS should be up to date. If not, log in as root and run :
apt update && apt upgrade