SHUTDOWN(8) - Linux man page online | Administration and privileged commands
Halt, power-off or reboot the machine.
Chapter
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: --help Print 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)| This manual | Reference | Other manuals |
|---|---|---|
| shutdown(8) | referred by | apccontrol(8) | boot(7) | halt(8) | kexec(8) | last(1) | molly-guard(8) | nologin(5) | pidof(8) | pxe-kexec(8) | reboot(2) | sudo(8) | systemd.directives(7) | systemd.index(7) | wall(1) | zshutdown_notify(8) |
| refer to | halt(8) | systemctl(1) | systemd(1) | wall(1) |