HALT(8)

  .SH "NAME" halt, poweroff, reboot - Halt, power-off or reboot the machine
  .SH "SYNOPSIS"
    .HP u
      halt
       [OPTIONS...]

    .HP u
      poweroff
       [OPTIONS...]

    .HP u
      reboot
       [OPTIONS...]

  .SH "DESCRIPTION"

    .PP halt, poweroff, reboot may be used to halt, power-off or reboot the machine.

  .SH "OPTIONS"

    .PP The following options are understood:

      .PP --help

          Print a short help text and exit.
          .RE
          .PP --halt

                Halt the machine, regardless of which one of the three commands is invoked.
              .RE
              .PP -p, --poweroff

                    Power-off the machine, regardless of which one of the three commands is invoked.
                  .RE
                  .PP --reboot

                        Reboot the machine, regardless of which one of the three commands is invoked.
                      .RE
                      .PP -f, --force

                            Force immediate halt, power-off, or reboot. When specified once, this results in an immediate but clean shutdown by the system manager. When specified twice, this results in an immediate shutdown without contacting the system manager. See the description of --force in systemctl(1) for more details.
                          .RE
                          .PP -w, --wtmp-only

                                Only write wtmp shutdown entry, do not actually halt, power-off, reboot.
                              .RE
                              .PP -d, --no-wtmp

                                    Do not write wtmp shutdown entry.
                                  .RE
                                  .PP -n, --no-sync

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

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

                                      .SH "EXIT STATUS"

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

                                      .SH "NOTES"

                                        .PP These commands are implemented in a way that preserves compatibility with the original SysV commands. systemctl(1) verbs halt, poweroff, reboot provide the same functionality with some additional features.

                                      .SH "SEE ALSO"

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