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Manual page and help for the dead linux command. Use the dead command to shut down the computer.
Man page output
man halt
HALT(8) halt HALT(8)
NAME
halt, poweroff, reboot - Halt, power-off or reboot the machine
SYNOPSIS
halt [OPTIONS...]
poweroff [OPTIONS...]
reboot [OPTIONS...]
DESCRIPTION
halt, poweroff, reboot may be used to halt, power-off or reboot the machine.
OPTIONS
The following options are understood:
--help
Print a short help text and exit.
--halt
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
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, reboot.
-d, --no-wtmp
Do not write wtmp shutdown entry.
-n, --no-sync
Don't sync hard disks/storage media before halt, power-off, reboot.
--no-wall
Do not send wall message before halt, power-off, reboot.
EXIT STATUS
On success, 0 is returned, a non-zero failure code otherwise.
NOTES
These commands are implemented in a way that preserves compatibility with the original
SysV commands. systemctl(1) verbs halt, poweroff, reboot provide the same functionality
with some additional features.
SEE ALSO
systemd(1), systemctl(1), shutdown(8), wall(1)
systemd 241 HALT(8)
Help output
sudo halt --help
halt [OPTIONS...]
Halt the system.
--help Show this help
--halt Halt the machine
-p --poweroff Switch off the machine
--reboot Reboot the machine
-f --force Force immediate halt/power-off/reboot
-w --wtmp-only Don't halt/power-off/reboot, just write wtmp record
-d --no-wtmp Don't write wtmp record
--no-wall Don't send wall message before halt/power-off/reboot
See the halt(8) man page for details.
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