State Machine Compiler 5_1_0 (Default branch)

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shutdown

shutdown(1M)						  System Administration Commands					      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 console 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 standard warning message "The system will be shut  down  in  ..."  If  the
       string contains more than one word, it should be contained within single (') 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 transitioning 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  procedure	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

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+

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.

SunOS 5.11							    9 May 2001							      shutdown(1M)

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