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SYNOPSIS
       reboot [OPTION]...

       halt [OPTION]...

       poweroff [OPTION]...

DESCRIPTION
       These  utilities  allow  a  system  administrator  to  reboot,  halt or
       poweroff the system.

       When called without the -f option, they simply invoke shutdown(8)  with
       the appropriate arguments.

OPTIONS
       -f     Does  not  invoke  shutdown(8)  and  instead performs the actual
              action you would expect from the name.  This is  generally  used
              from the event handler itself.

       -n     Does  not  call sync(2) before performing the reboot; this could
              result in data loss.  On Linux, this probably has no  effect  as
              the kernel flushes all write buffers before shutting down.

       -h     Iterates /proc/ide to find all IDE disk drives and requests that
              they enter a standby mode before shutting down.  On Linux,  this
              is unnecessary as the kernel will do this anyway.

       -i     Iterates  configured  network  interfaces  and  brings them down
              before shutting down.  On Linux, this is unnecessary as the ker‐
              nel will do this anyway.

       -p     Instructs the halt command to instead behave as poweroff.

NOTES
       This  tool  is provided for compatibility with the traditional System V
       init(8).

AUTHOR
       Written by Scott James Remnant.

REPORTING BUGS
       Report bugs at https://launchpad.net/products/upstart/+bugs

COPYRIGHT
       Copyright © 2007 Canonical Ltd.
       This is free software; see the source for copying conditions.  There is
       NO  warranty;  not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
       PURPOSE.

SEE ALSO
       shutdown(8) telinit(8)
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