poweroff
Halt, power-off or reboot the machine
TLDR
Power off the system
Halt the system (same as halt)
Reboot the system (same as reboot)
Shut down immediately without contacting the system manager
Write the wtmp shutdown entry without shutting down the system
SYNOPSIS
halt [OPTIONS...]
poweroff [OPTIONS...]
reboot [OPTIONS...]
DESCRIPTION
halt, poweroff, reboot may be used to halt, power-off, or reboot the machine. All three commands take the same options.
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
Dont 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 basic compatibility with the original SysV commands. systemctl(1) verbs halt, poweroff, reboot provide the same functionality with some additional features.
Note that on many SysV systems halt used to be synonymous to poweroff, i.e. both commands would equally result in powering the machine off. systemd is more accurate here, and halt results in halting the machine only (leaving power on), and poweroff is required to actually power it off.
