shutdown man page on SmartOS

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SHUTDOWN(1M)							  SHUTDOWN(1M)

NAME
       shutdown - shut down system, change system state

SYNOPSIS
       /usr/sbin/shutdown [-y] [-g grace-period] [-i init-state]
	    [message]

DESCRIPTION
       shutdown	 is  executed  by  the	super  user to change the state of the
       machine. In most cases, it is used to change from the multi-user	 state
       (state 2) to another state.

       By  default,  shutdown brings the system to a state where only the con‐
       sole has access to the operating system. This state is  called  single-
       user.

       Before  starting	 to  shut down daemons and killing processes, shutdown
       sends a warning message and, by default, a  final  message  asking  for
       confirmation.  message is a string that is sent out following the stan‐
       dard warning message "The system will be	 shut  down  in	 ..."  If  the
       string  contains more than one word, it should be contained within sin‐
       gle (') or double (") quotation marks.

       The warning message and the user provided message are output when there
       are 7200, 3600, 1800, 1200, 600, 300, 120, 60, and 30 seconds remaining
       before shutdown begins. See EXAMPLES.

       System state definitions are:

       state 0
		     Stop the operating system.

       state 1
		     State 1 is referred to as the  administrative  state.  In
		     state  1  file systems required for multi-user operations
		     are mounted, and logins requiring	access	to  multi-user
		     file  systems  can be used. When the system comes up from
		     firmware mode into state 1, only the  console  is	active
		     and  other multi-user (state 2) services are unavailable.
		     Note that not all user processes are stopped when transi‐
		     tioning from multi-user state to state 1.

       state s, S
		     State  s  (or S) is referred to as the single-user state.
		     All user processes are stopped  on	 transitions  to  this
		     state.  In	 the  single-user state, file systems required
		     for multi-user logins are unmounted and  the  system  can
		     only  be  accessed	 through the console. Logins requiring
		     access to multi-user file systems cannot be used.

       state 5
		     Shut the machine down so that it is safe  to  remove  the
		     power.  Have  the	machine remove power, if possible. The
		     rc0 procedure is called to perform this task.

       state 6
		     Stop the operating system and reboot to the state defined
		     by	 the initdefault entry in /etc/inittab. The rc6 proce‐
		     dure is called to perform this task.

OPTIONS
       -y
			  Pre-answer the confirmation question so the  command
			  can be run without user intervention.

       -g grace-period
			  Allow the super user to change the number of seconds
			  from the 60-second default.

       -i init-state
			  If there  are	 warnings,  init-state	specifies  the
			  state init is to be in. By default, system state `s'
			  is used.

EXAMPLES
       Example 1 Using shutdown

       In the following example, shutdown is being executed on host foo and is
       scheduled  in  120  seconds. The warning message is output 2 minutes, 1
       minute, and 30 seconds before the final confirmation message.

	 example# shutdown -i S -g 120 "===== disk replacement ====="
	 Shutdown started.   Tue Jun   7  14:51:40 PDT	1994

	 Broadcast Message from root (pts/1) on foo Tue Jun  7 14:51:41...
	 The system will be shut down in 2 minutes
	 ===== disk replacement =====
	 Broadcast Message from root (pts/1) on foo Tue Jun  7 14:52:41...
	 The system will be shut down in 1 minutes
	 ===== disk replacement =====
	 Broadcast Message from root (pts/1) on foo Tue Jun  7 14:53:41...
	 The system will be shut down in 30 seconds
	 ===== disk replacement =====
	 Do you want to continue? (y or n):

FILES
       /etc/inittab
		       controls process dispatching by init

SEE ALSO
       boot(1M), halt(1M),  init(1M),  killall(1M),  reboot(1M),  ufsdump(1M),
       init.d(4), inittab(4), nologin(4), attributes(5)

NOTES
       When  a	system	transitions down to the S or s state, the /etc/nologin
       file (see nologin(4)) is created. Upon subsequent transition to state 2
       (multi-user  state), this file is removed by a script in the /etc/rc2.d
       directory.

				  May 9, 2001			  SHUTDOWN(1M)
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