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  informa-
     tion  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.


ATRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:




SunOS 5.11           Last change: 2 Nov 2004                    1






System Administration Commands                           halt(1M)



     
           ATRIBUTE TYPE               ATRIBUTE 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 exe-
     cute 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           Last change: 2 Nov 2004                    2