Help me (Ubuntu)?

I'm too stupid for this tutorial: https://stackoverflow.com/...of-a-crash

What can you help if you don't know where your problem is?

Simply put the bash script in a while loop so that it restarts again and again. Nothing special, I suppose, is it?

Thanks for the hint. Unfortunately I don't know exactly how I can fix your "stupidity for the tutorial". Why does it fail?

Does the server not start at all?
Does it always quit when you log out of the console?
Are all the colors twisted?

Personally, I would put the start script in a systemd service so that Minecraft is started when the server starts (I assume that the server has systemd):

https://wiki.ubuntuusers.de/systemd/Service_Units/
https://wiki.ubuntuusers.de/Howto/systemd_Service_Unit_Beispiel/