shutdown man page on Minix

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SHUTDOWN(8)							   SHUTDOWN(8)

NAME
       shutdown - graciously close the system down

SYNOPSIS
       shutdown [-hrRmkpd] [time-specification [message]]

DESCRIPTION
       Shutdown	 is a program which allows a system operator to close down the
       system in an nice way.  Shutdown informs the users  why	and  when  the
       system  is  going down.	This warning is issued 10 minutes before shut‐
       down time and every minute in the last 5 minutes.  At this time (5 min‐
       utes),  shutdown	 creates a file /etc/nologin to prevent new users from
       logging in.

       Shutdown keeps a logfile of shutdowns.  Every shutdown is registered in
       /usr/adm/wtmp,	if   this   file   exists,  and	 by  syslog(3)	(level
       auth.notice).  After these actions, a call is done to  reboot(2)	 which
       actually brings the system down.

       Time-specification  may be something like 15:00, 15.00, +15, or now for
       a shutdown at 3pm (twice), 15 minutes from now, or immediately.

       The message may be used to describe why the system is  going  down,  it
       may also be typed on standard input with the -m option.

OPTIONS
       -h     This flag prevents the system from rebooting after the shutdown.
	      The system can now be powered off.  This is the default.

       -r     This flag indicates that the system should reboot after shutting
	      down.

       -R     Reboot  the  system  by  resetting  it.  With -R the system will
	      receive a hardware reset.

       -p     Attempt to power off the machine after shutting down;  reset  if
	      that is not possible on the current hardware.

       -d     Default CTRL-ALT-DEL shutdown.

       -m     Allows  the  operator  to	 type  a  shutdown message on standard
	      input, that will be added to the messages displayed on all  ter‐
	      minals.

       -k     This  option  gives  the	possibility  of terminating an already
	      started shutdown.	 This is only possible if  shutdown  time  has
	      not yet arrived.

       -C     Check  if	 the system crashed.  This option is not used at shut‐
	      down time, but at reboot time.  It tells	if  the	 file  systems
	      should  be checked by testing if the last entry in the wtmp file
	      is a shutdown entry.  (A crude replacement  for  a  file	system
	      clean flag.)

SEE ALSO
       reboot(2), syslog(3), halt(8), boot(8).

AUTHOR
       Edvard Tuinder (v892231@si.hhs.NL)

								   SHUTDOWN(8)
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