История изменений

shutdown -h
Usage:	  shutdown [-akrhPHfFnc] [-t sec] time [warning message]
		  -a:      use /etc/shutdown.allow
		  -k:      don't really shutdown, only warn.
		  -r:      reboot after shutdown.
		  -h:      halt after shutdown.
		  -P:      halt action is to turn off power.
		  -H:      halt action is to just halt.
		  -f:      do a 'fast' reboot (skip fsck).
		  -F:      Force fsck on reboot.
		  -n:      do not go through «init» but go down real fast.
		  -c:      cancel a running shutdown.
		  -t secs: delay between warning and kill signal.
		  ** the «time» argument is mandatory! (try «now») **

shutdown -h
shutdown: you must be root to do that!
Usage:	  shutdown [-akrhPHfFnc] [-t sec] time [warning message]
		  -a:      use /etc/shutdown.allow
		  -k:      don't really shutdown, only warn.
		  -r:      reboot after shutdown.
		  -h:      halt after shutdown.
		  -P:      halt action is to turn off power.
		  -H:      halt action is to just halt.
		  -f:      do a 'fast' reboot (skip fsck).
		  -F:      Force fsck on reboot.
		  -n:      do not go through «init» but go down real fast.
		  -c:      cancel a running shutdown.
		  -t secs: delay between warning and kill signal.
		  ** the «time» argument is mandatory! (try «now») **