title: /etc/rc.local is missing from my headless ubuntu 18.04
body: <p>I am currently hosting a minecraft server on ubuntu server 18.04 LTS. I have a .sh script to start the server's java file, and I would like to run it at startup so that the minecraft server starts when the physical server boots. I wished to do this via /etc/rc.local. However, I do not see rc.local in that location. 
  Is it in a different location for this version of ubuntu, or is there an entirely different method I should use to run this .sh at startup?</p>