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)