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SHUTDOWN(8) | shutdown | SHUTDOWN(8) |
NAME¶
shutdown - Halt, power-off or reboot the machineSYNOPSIS¶
shutdown [OPTIONS...] [TIME] [WALL...]
DESCRIPTION¶
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 implied. 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¶
The following options are understood: --helpPrint a short help text and exit.
-H, --halt
Halt the machine.
-P, --poweroff
Power-off the machine (the default).
-r, --reboot
Reboot the machine.
-h
Equivalent to --poweroff, unless --halt is
specified.
-k
Do not halt, power-off, reboot, just write wall
message.
--no-wall
Do not send wall message before halt, power-off,
reboot.
-c
Cancel a pending shutdown. This may be used cancel the
effect of an invocation of shutdown with a time argument that is not
"+0" or "now".
EXIT STATUS¶
On success, 0 is returned, a non-zero failure code otherwise.SEE ALSO¶
systemd(1), systemctl(1), halt(8), wall(1)systemd 230 |