• NAME
  
  reboot, halt, poweroff - reboot or stop the system
• 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 kernel 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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