halt(8) [osf1 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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halt(1M) System Administration Commands halt(1M) NAME
halt, poweroff - stop the processor SYNOPSIS
/usr/sbin/halt [-dlnqy] /usr/sbin/poweroff [-dlnqy] DESCRIPTION
The halt and poweroff utilities write any pending information to the disks and then stop the processor. The poweroff utility has the machine remove power, if possible. The halt and poweroff utilities normally log the system shutdown to the system log daemon, syslogd(1M), and place a shutdown record in the login accounting file /var/adm/wtmpx. These actions are inhibited if the -n or -q options are present. OPTIONS
The following options are supported: -d Force a system crash dump before rebooting. See dumpadm(1M) for information on configuring system crash dumps. -l Suppress sending a message to the system log daemon, syslogd(1M), about who executed halt. -n Prevent the sync(1M) before stopping. -q Quick halt. No graceful shutdown is attempted. -y Halt the system, even from a dialup terminal. FILES
/var/adm/wtmpx History of user access and administration information. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
dumpadm(1M), init(1M), reboot(1M), shutdown(1M), sync(1M), syslogd(1M), inittab(4), attributes(5), smf(5) NOTES
The halt and poweroff utilities do not cleanly shutdown smf(5) services. Execute the scripts in /etc/rcnum.d or execute shutdown actions in inittab(4). To ensure a complete shutdown of system services, use shutdown(1M) or init(1M) to reboot a Solaris system. SunOS 5.10 2 Nov 2004 halt(1M)