shutdown(8) on Linux
The text e3bb602de25c, as Debian 5.0 (Lenny), Debian 4.0 (Etch) shipped it.
bring the system down
Flags it lists
-
-F -
-H -
-P -
-a -
-c -
-f -
-h -
-k -
-n -
-r -
-t