REBOOT(8)               OpenBSD System Manager's Manual              REBOOT(8)

NAME
     reboot, halt - stopping and restarting the system

SYNOPSIS
     halt [-dnpq]
     reboot [-dnq]

DESCRIPTION
     The halt and reboot utilities flush the file system cache to disk, run
     the system shutdown script, send all running processes a SIGTERM (and
     subsequently a SIGKILL), and, respectively, halt or restart the system.
     The action is logged, including entering a shutdown record into the login
     accounting file.

     The options are as follows:

     -d      Causes system to create a dump before rebooting.  This option is
             useful for debugging system dump procedures or capturing the
             state of a corrupted or misbehaving system.  See savecore(8) for
             information on how to recover this dump.

     -n      Prevent file system cache from being flushed.  This option should
             probably not be used.

     -q      Quick.  The system is halted or restarted quickly and ungraceful-
             ly, and only the flushing of the file system cache is performed.
             This option should probably not be used.

     -p      Causes the system to power down, if it is being halted, and the
             hardware supports automatic power down.  (Currently supported on
             some i386, sparc, and mac68k platforms.)

     Normally, the shutdown(8) utility is used when the system needs to be
     halted or restarted, giving users advance warning of their impending
     doom.

FILES
     /etc/rc.shutdown  script which is run at shutdown time

SEE ALSO
     utmp(5), boot_alpha(8), boot_amiga(8), boot_hp300(8), boot_i386(8),
     boot_mac68k(8), boot_sparc(8), boot_sun3(8), boot_vax(8), rc.shutdown(8),
     savecore(8), shutdown(8), sync(8)

HISTORY
     A reboot command appeared in Version 6 AT&T UNIX.

OpenBSD 3.0                      June 9, 1993                                1
