reboot(8) — Linux manual page


HALT(8)                             halt                             HALT(8)

NAME         top

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

SYNOPSIS         top

       halt [OPTIONS...]

       poweroff [OPTIONS...]

       reboot [OPTIONS...]

DESCRIPTION         top

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

OPTIONS         top

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

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

       -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.

       -w, --wtmp-only
           Only write wtmp shutdown entry, do not actually halt, power-off,

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

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

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

EXIT STATUS         top

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

NOTES         top

       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.

SEE ALSO         top

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

COLOPHON         top

       This page is part of the systemd (systemd system and service manager)
       project.  Information about the project can be found at 
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       report for this manual page, see
       ⟨⟩.  This
       page was obtained from the project's upstream Git repository
       ⟨⟩ on 2020-09-18.  (At that
       time, the date of the most recent commit that was found in the repos‐
       itory was 2020-09-18.)  If you discover any rendering problems in
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       of the original manual page), send a mail to

systemd 246                                                          HALT(8)

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