Automatically Restart Server


So I host a few servers for friends and family, and one of them used the /restart command (paper server), and it successfully shut down the server, but it wouldn’t restart the server. After some digging, I learned that it won’t work due to the way MineOS handles servers.

I was then pointed in the direction of cron jobs. I have NEVER used cron before. My question: I don’t care how I do it, what is the EASIEST way to have the server automatically restart once stopped / crashed? I don’t want my cousin having to text me to restart the server every time he feels the need to.