Manual pages › BSD versions of commands (1B)
halt(1B)
stop the processor
From the original Amiga UNIX 2.1 manual. Some things it mentions may not be in this release.
NAME
halt - stop the processor
SYNOPSIS
/usr/ucb/halt [ -nqy ]
DESCRIPTION
halt writes out any information pending to the disks and then stops the processor.
halt normally logs the system shutdown to the system log daemon, syslogd(1M), and places a shutdown record in the login accounting file /var/adm/wtmp. These actions are inhibited if the -n or -q options are present.
The following options are available:
-n Prevent the sync before stopping. -q Quick halt. No graceful shutdown is attempted. -y Halt the system, even from a dialup terminal.
FILES
/var/adm/wtmp login accounting file
SEE ALSO
reboot(1M), syslogd(1M) shutdown(1M), init(1M) in the System Administrator's Reference Manual.
NOTES
This command is equivalent to init 0.