I followed the same process If you install the Remote Control Module, then you can use this to restart the mirror https://forum.magicmirror.builders/topic/735/remote-control-shutdown-configure-and-update-your-magicmirror/

@dboa thats not right as I posted in the other thread as well, as soon as you want to use a remotefile it will fail. I posted the correct code in the other thread. Keep in mind when you want to update the MagicMirror next time this can cause a conflict