shutdown(1M)                   DG/UX R4.11MU05                  shutdown(1M)


NAME
       shutdown - shut down system, change system state

SYNOPSIS
       /sbin/shutdown [ -y ] [ -g grace_period [ -i init_state ]

DESCRIPTION
       This command can only be executed by a user with appropriate
       privilege to change the state of the machine.  For systems supporting
       the DG/UX Capability Option, appropriate privilege is defined as
       having one or more specific capabilities enabled in the effective
       capability set of the user.  See cap_defaults(5) for the default
       capabilities for this command.

       On generic DG/UX systems, appropriate privilege means that your
       process has an effective UID of root.  See the
       appropriate_privilege(5) man page for more information.

       By default, it brings the system to a state where only the operator
       console has access to the UNIX system.  This state is traditionally
       called "single-user".

       The command sends a warning message to all of the terminals (all the
       people currently logged in) and a final message before it starts
       actual shutdown activities.  By default, the command asks the user at
       the console 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 privileged user to change the number of seconds
              from the 60-second default.  grace_period is expressed in
              seconds:  g300 gives a 5-minute warning.

       -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.

       Possible system states are:

       state s, S
            Bring the machine to the state traditionally called single-user.
            The /etc/rcS.d rc scripts are called to do this work.  All
            processes are killed and all file systems other than root are
            unmounted.

       state 1
            Bring the machine to the state called the administrator run
            level.  All local file systems will be mounted, and the update
            daemon will be running.  If specified in the /etc/inittab file,
            optional "administrative" terminals may be enabled.

SEE ALSO
       init(1M), inittab(4), cap_defaults(5).

NOTES
       The shutdown command must be invoked from the system console.  To
       determine if you are at the system console, execute /usr/bin/tty.  If
       you are running in a window environment such as X, you must terminate
       the X session.  If you are running xdm, you should terminate it also.



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