SHUTDOWN(1M)                                         SHUTDOWN(1M)



     NAME
          shutdown - shut down system, change system state

     SYNOPSIS
          cd /; /etc/shutdown [ -y ] [ -ggrace_period [ -iinit_state ]

     DESCRIPTION
          This command is executed by the super-user to change the
          state of the machine.  By default, it brings the system to a
          state where only the console has access to the UNIX system.
          This state is traditionally called "single-user".

          The command sends a warning message and a final message
          before it starts actual shutdown activities.  By default,
          the command asks for confirmation before it starts shutting
          down daemons and killing processes.  The options are used as
          follows:

          -y   pre-answers the confirmation question so the command
               can be run without user intervention.  A default of 60
               seconds is allowed between the warning message and the
               final message.  Another 60 seconds is allowed between
               the final message and the confirmation.

          -ggrace_period
               allows the super-user to change the number of seconds
               from the 60-second default.

          -iinit_state
               specifies the state that init(1M) is to be put in
               following the warnings, if any.  By default, system
               state "s" is used (the same as states "1" and "S").

          Other recommended system state definitions are:

          state 0
               Shut the machine down so it is safe to remove the
               power.  Have the machine remove power if it can.  The
               /etc/rc0 procedure is called to do this work.

          state 1, s, S
               Bring the machine to the state traditionally called
               single-user.  The /etc/rc0 procedure is called to do
               this work.  (Though s and 1 are both used to go to
               single user state, s only kills processes spawned by
               init and does not unmount file systems.  State 1
               unmounts everything except root and kills all user
               processes, except those that relate to the console.)

          state 5
               Stop the UNIX system and go to the firmware monitor.




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     SHUTDOWN(1M)                                         SHUTDOWN(1M)



          state 6
               Stop the UNIX system and reboot to the state defined by
               the initdefault entry in /etc/inittab.

     SEE ALSO
          init(1M), rc0(1M), rc2(1M).
          inittab(4) in the Programmer's Reference Manual.

     ORIGIN
          AT&T V.3













































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