table of contents
- bookworm 252.30-1~deb12u2
- bookworm 3.06-4
- bookworm-backports 3.08-3~bpo12+2
- bookworm-backports 254.16-1~bpo12+1
- testing 256.7-2
- testing 3.11-1
- testing 2.1.2-60
- unstable 2.1.2-60
- unstable 3.11-1
- unstable 256.7-3
SHUTDOWN(8) | shutdown | SHUTDOWN(8) |
NAME¶
shutdown - Halt, power off or reboot the machine
SYNOPSIS¶
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
-H, --halt
-P, --poweroff
-r, --reboot
-h
-k
--no-wall
-c
--show
Added in version 250.
EXIT STATUS¶
On success, 0 is returned, a non-zero failure code otherwise.
COMPATIBILITY¶
The 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 instead.
SEE ALSO¶
systemd 256.7 |