x SuSE Linux 13.1-RELEASE x
x SuSE Linux 13.1-RELEASEx
POWEROFF(8) poweroff POWEROFF(8)
NAME
poweroff, reboot, halt - Power off, reboot, or halt the machine
SYNOPSIS
poweroff [OPTIONS...]
reboot [OPTIONS...]
halt [OPTIONS...]
DESCRIPTION
poweroff, reboot, and halt may be used to power off, reboot, or halt
the machine. All three commands take the same options.
OPTIONS
The following options are understood:
--help
Print a short help text and exit.
--halt
Halt the machine, regardless of which one of the three commands is
invoked.
-p, --poweroff
Power off the machine, when either halt or poweroff is invoked.
This option is ignored when reboot is invoked.
--reboot
Reboot the machine, regardless of which one of the three commands
is invoked.
-f, --force
Force immediate power-off, halt, or reboot. If specified, the
command does not contact the init system. In most cases,
filesystems are not properly unmounted before shutdown. For
example, the command reboot -f is mostly equivalent to systemctl
reboot -ff, instead of systemctl reboot -f.
-w, --wtmp-only
Only write wtmp shutdown entry, do not actually power off, reboot,
or halt.
-d, --no-wtmp
Do not write wtmp shutdown entry.
-n, --no-sync
Don't sync hard disks/storage media before power-off, reboot, or
halt.
--no-wall
Do not send wall message before power-off, reboot, or halt.
EXIT STATUS
On success, 0 is returned, a non-zero failure code otherwise.
NOTES
These commands are implemented in a way that preserves basic
compatibility with the original SysV commands. systemctl(1) verbs
poweroff, reboot, halt provide the same functionality with some
additional features.
Note that on many SysV systems halt used to be synonymous to poweroff,
i.e. both commands would equally result in powering the machine off.
systemd is more accurate here, and halt results in halting the machine
only (leaving power on), and poweroff is required to actually power it
off.
SEE ALSO
systemd(1), systemctl(1), shutdown(8), wall(1)
systemd 254 POWEROFF(8)
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