HALT(8)                                                         halt                                                        HALT(8)

       halt, poweroff, reboot - Halt, power-off or reboot the machine

       halt [OPTIONS...]

       poweroff [OPTIONS...]

       reboot [OPTIONS...]

       halt, poweroff, reboot may be used to halt, power-off, or reboot the machine. All three commands take the same options.

       The following options are understood:

           Print a short help text and exit.

           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 the machine, regardless of which one of the three commands is invoked.

       -f, --force
           Force immediate halt, power-off, 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 halt, power-off, reboot.

       -d, --no-wtmp
           Do not write wtmp shutdown entry.

       -n, --no-sync
           Don't sync hard disks/storage media before halt, power-off, reboot.

           Do not send wall message before halt, power-off, reboot.

       On success, 0 is returned, a non-zero failure code otherwise.

       These commands are implemented in a way that preserves basic compatibility with the original SysV commands.  systemctl(1)
       verbs halt, poweroff, reboot 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.

       systemd(1), systemctl(1), shutdown(8), wall(1)

systemd 252                                                                                                                 HALT(8)