NAME    [Toc]    [Back]

     reboot, halt - stopping and restarting the system

SYNOPSIS    [Toc]    [Back]

     halt [-dnpq]
     reboot [-dnq]

DESCRIPTION    [Toc]    [Back]

     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 ungracefully,
  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,  luna88k,  mac68k,  macppc,  sparc   and
sparc64 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    [Toc]    [Back]

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

SEE ALSO    [Toc]    [Back]

     reboot(2),     utmp(5),     boot_alpha(8),    boot_amd64(8),
boot_hp300(8),
     boot_hppa(8), boot_i386(8), boot_mac68k(8), boot_macppc(8),
     boot_mvme68k(8),       boot_mvme88k(8),       boot_sparc(8),
boot_sparc64(8),
     boot_vax(8),   rc.shutdown(8),   savecore(8),   shutdown(8),
sync(8)

HISTORY    [Toc]    [Back]

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

OpenBSD      3.6                           June      9,      1993