It is fairly outdated. It says it was last updated in December 2014, but I'm not sure it's had much added. (this is on Ubuntu, but anything with systemd should

It is fairly outdated. It says it was last updated in December 2014, but I'm not sure it's had much added. (this is on Ubuntu, but anything with systemd should be similar) You're correct about systemctl. If you do: ls -lh /sbin | grep systemctl you can see that `poweroff` and other commands are symlinks to `/sbin/systemctl`. The systemctl code shows it checks the name it's called with and chooses an action based on that: https://github.com/systemd/systemd/blob/aaa6732d7834c1dc0f937936563218724d71b619/src/systemctl/systemctl.c#L8149 https://github.com/systemd/systemd/blob/aaa6732d7834c1dc0f93...