HALT(8)                   BSD System Manager's Manual                  HALT(8)

NAME
     halt - stop the processor

SYNOPSIS
     halt [-n] [-q] [-y]

DESCRIPTION
     Halt writes out sandbagged information to the disks and then stops the
     processor.  The machine does not reboot, even if the auto-reboot switch
     is set on the console.

     Available options for halt:

     -n      No sync before stopping.

     -q      Quick halt, no graceful shutdown is attempted.

     -y      This option is needed if you are trying to halt the system from a
             dialup.

     Halt normally logs the shutdown using syslog(8) and places a shutdown
     record in the login accounting file /var/log/wtmp. These actions are in-
     hibited if the -n or -q options are present.

SEE ALSO
     reboot(8),  shutdown(8),  syslogd(8)

BUGS
     It is very difficult to halt a VAX, as the machine wants to then reboot
     itself.  A rather tight loop suffices.

HISTORY
     The halt command appeared in 4.0BSD.

4th Berkeley Distribution       March 27, 1993                               1