Skip site navigation (1)Skip section navigation (2)

FreeBSD Man Pages

Man Page or Keyword Search:
Man Architecture
Apropos Keyword Search (all sections) Output format
home | help
REBOOT(8)		FreeBSD	System Manager's Manual		     REBOOT(8)

     reboot, halt, fastboot, fasthalt -- stopping and restarting the system

     halt [-lnqp]
     reboot [-dlnqp]
     fasthalt [-lnqp]
     fastboot [-dlnqp]

     The halt and reboot utilities flush the file system cache to disk,	send
     all running processes a SIGTERM (and subsequently a SIGKILL) and, respec-
     tively, halt or restart the system.  The action is	logged,	including
     entering a	shutdown record	into the wtmp(5) file.

     The options are as	follows:

     -d	     The system	is requested to	create a crash dump.  This option is
	     supported only when rebooting, and	it has no effect unless	a dump
	     device has	previously been	specified with dumpon(8).

     -l	     The halt or reboot	is not logged to the system log.  This option
	     is	intended for applications such as shutdown(8), that call
	     reboot or halt and	log this themselves.

     -n	     The file system cache is not flushed.  This option	should proba-
	     bly not be	used.

     -q	     The system	is halted or restarted quickly and ungracefully, and
	     only the flushing of the file system cache	is performed (if the
	     -n	is not specified).  This option	should probably	not be used.

     -p	     The system	will turn off the power	if it can.  This is of course
	     likely to make reboot rather similar to halt.

     The fasthalt and fastboot utilities are nothing more than aliases for the
     halt and reboot utilities.

     Normally, the shutdown(8) utility is used when the	system needs to	be
     halted or restarted, giving users advance warning of their	impending doom
     and cleanly terminating specific programs.

     wtmp(5), boot(8), dumpon(8), savecore(8), shutdown(8), sync(8)

     A reboot command appeared in Version 6 AT&T UNIX.

FreeBSD	10.3			 June 9, 1993			  FreeBSD 10.3


Want to link to this manual page? Use this URL:

home | help