shutdown(8) — Linux manual page


SHUTDOWN(8)                     shutdown                     SHUTDOWN(8)

NAME         top

       shutdown - Halt, power off or reboot the machine

SYNOPSIS         top

       shutdown [OPTIONS...] [TIME] [WALL...]

DESCRIPTION         top

       shutdown may be used to halt, power off, or reboot the machine.

       The first argument may be a time string (which is usually "now").
       Optionally, this may be followed by a wall message to be sent to
       all logged-in users before going down.

       The time string may either be in the format "hh:mm" for
       hour/minutes specifying the time to execute the shutdown at,
       specified in 24h clock format. Alternatively it may be in the
       syntax "+m" referring to the specified number of minutes m from
       now.  "now" is an alias for "+0", i.e. for triggering an
       immediate shutdown. If no time argument is specified, "+1" is

       Note that to specify a wall message you must specify a time
       argument, too.

       If the time argument is used, 5 minutes before the system goes
       down the /run/nologin file is created to ensure that further
       logins shall not be allowed.

OPTIONS         top

       The following options are understood:

           Print a short help text and exit.

       -H, --halt
           Halt the machine.

       -P, --poweroff
           Power the machine off (the default).

       -r, --reboot
           Reboot the machine.

           The same as --poweroff, but does not override the action to
           take if it is "halt". E.g.  shutdown --reboot -h means
           "poweroff", but shutdown --halt -h means "halt".

           Do not halt, power off, or reboot, but just write the wall

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

           Cancel a pending shutdown. This may be used to cancel the
           effect of an invocation of shutdown with a time argument that
           is not "+0" or "now".

           Show a pending shutdown action and time if there is any.

           Added in version 250.

EXIT STATUS         top

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


        shutdown command in previous init systems (including sysvinit)
       defaulted to single-user mode instead of powering off the
       machine. To change into single-user mode, use systemctl rescue

SEE ALSO         top

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

COLOPHON         top

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       This page was obtained from the project's upstream Git repository
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systemd 255                                                  SHUTDOWN(8)

Pages that refer to this page: last(1@@util-linux)login(1)wall(1)reboot(2)nologin(5)boot(7)systemd.directives(7)systemd.index(7)kexec(8)poweroff(8)