halt(8) System Manager's Manual halt(8)Name
halt - stop the processor
Syntax
/etc/halt [ -n ] [ -q ] [ -y ]
Description
The command writes information to the disks and then returns the processor to the monitor. The machine does not reboot.
Options-n Prevents the sync before stopping.
-q Causes a quick halt, no graceful shutdown is attempted.
-y Allows you to halt the system from a dialup.
See Alsoreboot(8), shutdown(8)
RISC halt(8)
Check Out this Related Man Page
halt(8) System Manager's Manual halt(8)NAME
halt - Stops the processor
SYNOPSIS
/usr/sbin/halt [-d] [-l] [-n] [-q] [-y]
DESCRIPTION
If other users are logged into the system, or if the system is operating at a multiuser run level, use the /usr/sbin/shutdown -h command to
halt the system. If only the root user is logged in, and you do not plan to restart the system immediately, use the halt command.
The halt command writes data to the disks and then stops the processor(s), but does not reboot the machine. You must be the root user to
run this command.
When the system displays the ....Halt completed.... message, you can turn off power to the machine.
If the command is invoked without the -l, -n, or -q flag, the halt program logs the shutdown using the syslogd command and places a record
of the shutdown in the login accounting file, /var/adm/wtmp. Using the -q and the -n flags imply the -l flag.
FLAGS
Generates a crash dump of the system before halting it. Can be used with any other flag. Does not log the halt using syslog Prevents the
sync before stopping, and does not log the halt using syslog Causes a quick halt, does not log the halt using syslog, and makes no attempt
to kill all processes Halts the system from a dial-up operation
EXAMPLES
To halt the system without logging the shutdown in the log file, enter: halt -l To halt the system quickly, enter: halt -q To halt the sys-
tem quickly, also leaving a crash dump for the savecore command, enter: halt -d -q To halt the system from a dial-up, enter: halt -y
FILES
Specifies the command path Specifies the syslog daemon Specifies the login accounting file
RELATED INFORMATION
Commands: fasthalt(8), reboot(8), savecore(8), shutdown(8), syslogd(8)
Functions: reboot(2), sync(2), syslog(3) delim off
halt(8)
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