opensolaris man page for poweroff

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 5.11							    2 Nov 2004								  halt(1M)