shutdown(1M)                                         shutdown(1M)



     NAME
          shutdown - terminate all processing

     SYNOPSIS
          /etc/shutdown

     DESCRIPTION
          The primary shutdown function is to terminate all currently
          running processes in an orderly and cautious manner.  The
          procedure is designed to interact with the operator (i.e.,
          the person who invoked shutdown).  shutdown may instruct the
          operator to perform some specific tasks, or to supply
          certain responses before execution can resume.  shutdown
          goes through the following steps:

             All users logged on the system are notified to log off
             the system by a broadcasted message. The operator may
             display his/her own message at this time. Otherwise, the
             standard file save message is displayed.

             If the operator wishes to run the file-save procedure,
             shutdown unmounts all file systems.

             All file systems' super blocks are updated before the
             system is brought to single-user mode.  A sync must be
             done before re-booting the system, to ensure file system
             integrity.

     DIAGNOSTICS
          The most common error diagnostic that will occur is device
          busy.  This diagnostic happens when a particular file system
          could not be unmounted.

     FILES
          /etc/shutdown

     SEE ALSO
          mount(1M), sync(1).

















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