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      If the -d option is specified, system will dump crash into swap
             partition.

     -n      If the -n option is specified, the file system cache is not
             flushed.  This option should probably not be used.

     -q      If the -q option is specified, the system is halted or restarted
             quickly and ungracefully, and only the flushing of the file sys-
             tem cache is performed.  This option should probably not be used.

     -d      If the -d option is specified, the system will create a dump be-
             fore rebooting.  This option is useful for debugging system dump
             procedures or capturing the state of a corrupted or misbehaving
             system.

     -p      The -p option causes the system to power down, if it is being
             halted, and the hardware supports automatic power down.  (Cur-
             rently supported on some i386 and sparc 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 - The script which is run at shutdown time.

SEE ALSO
     sync(1),  utmp(5),  boot_<arch>(8),  savecore(8),  shutdown(8)

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

OpenBSD 2.3                      June 9, 1993                                1