This mod simply looks for a file periodically, which must be created by
touch(1) or something similar, and owned by the same user who is
running the Luanti server. This file simply serves as a sort of flag.
If found, the file is immediately deleted, and pop-up warnings are issued to all players on the server that it will be rebooting soon.
This mod must be listed in secure.trusted_mods (assuming mod security is
enabled) in order for the os.remove() function to work.
The pop-up function is provided by kaeza's notice mod.