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 inhibited 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.