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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,
     respectively, 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
             probably 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 11.0-PRERELEASE          June 9, 1993          FreeBSD 11.0-PRERELEASE


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