`pid 0` on many [[Linux]] systems. A Linux-specific system process manager and many other things, much to the disgust of many a grey-beard. # Hints [Indefinite Restarts](https://michael.stapelberg.ch/posts/2024-01-17-systemd-indefinite-service-restarts/) [Shutting down a system via dbus](https://askubuntu.com/questions/454039/what-command-is-executed-when-shutdown-from-the-graphical-menu-in-14-04)