Plex Media Server INIT Script
This is the init script for Plex Media Server that should be located at /etc/init.d/plexmediaserver. This is something I had to track down when setting up Plex Media Server with OpenMediaVault, as the default installer for PlexMediaServer seems to have a problem with creating the init script, so I had to manually add it.
I've also created a script that will automatically install latest init.d file and do everything for you (move files, etc) https://github.com/tripflex/iPlex
wget https://raw.github.com/tripflex/plexmediaserver-init/master/plexmediaserver mv plexmediaserver /etc/init.d/plexmediaserver chmod +x /etc/init.d/plexmediaserver
Using this should be just the same as you normally do, but as example
If you upgrade plex using the deb, the installer will rename the file to something like plexmediaserver.bkup, you will just need to remove the new /etc/init.d/plexmediaserver it created (should be blank), and move the backup back to it's original name.