SHUTDOWN(1M)         INTERACTIVE UNIX System         SHUTDOWN(1M)



          NAME
               shutdown - shut down system, change system state

          SYNOPSIS
               /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 command can be executed from the console only.  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 fol-
                    lowing 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 sin-
                    gle 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 6
                    Stop the UNIX system and reboot to the state defined by
                    the initdefault entry in /etc/inittab.


          Rev. Base System                                           Page 1

          SHUTDOWN(1M)         INTERACTIVE UNIX System         SHUTDOWN(1M)



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



















































          Rev. Base System                                           Page 2