Poweroff - Man Page

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).

SEE ALSO
shutdown(8) telinit(8)