101.3Basic
Stop a systemd system normally and power off compatible hardware.
This is not a reboot or suspend operation.
Which command is appropriate?
× Incorrect
systemctl poweroff stops services and handles filesystems before requesting a hardware power-off.
Detailed explanation
Incorrect
systemctl haltIncorrect. halt stops the operating system but does not necessarily request hardware power-off.
Correct
systemctl poweroffCorrect. poweroff performs an orderly shutdown and power-off.
Incorrect
systemctl hibernateIncorrect. hibernate saves state for a later resume.
Incorrect
systemctl rebootIncorrect. reboot restarts the system instead of powering it off.
Try it yourself
An example you can run in a temporary verification environment.
systemctl --help | grep -E 'poweroff|Shut down and power-off'Expected result
poweroffの説明。実際の電源断は行わないKey points
- poweroff requests power-down
- halt has a different final state
- hibernate is suspend-to-disk
Notes
- Environment: Linux / systemd 255以降
- Command output formatting can vary slightly by distribution or tool version.
- Run the example in a temporary directory or process when possible.
Foundation review
Read the scope first
Check whether the command acts on the current shell, a new process, an existing process, or a file.
Verify the observable result
Use the supplied command and compare the output with the expected result.
Question IDKP-101-156
EnvironmentLinux / systemd 255以降
Last technical review2026-08-12
Report an error or rights issue