1.09.2Basic
Show the current journal tail and continue displaying entries as they arrive.
Which command is appropriate?
× Incorrect
journalctl -f follows new entries like tail -f. Stop following with Ctrl+C.
Detailed explanation
Incorrect
journalctl -rIncorrect. -r reverses display order and exits.
Incorrect
journalctl -nIncorrect. -n prints a number of entries but does not follow.
Incorrect
journalctl -bIncorrect. -b filters by boot only.
Correct
journalctl -fCorrect. -f follows newly arriving entries.
Try it yourself
An example you can run in a temporary verification environment.
journalctl --help | grep -E -- '-f|--follow' | head -n 1Expected result
followを示すhelp行Key points
- -f means follow
- -n sets a count
- Ctrl+C stops
Notes
- Environment: systemd journalctl help / 追跡開始なし
- Command output formatting can vary slightly by distribution or tool version.
- Run the example in a temporary directory or process when possible.
Foundation review
Syslog facility and priority
Metadata that classifies a message source and its severity.
Journal persistence
Whether systemd journal data survives a reboot and where it is stored.
Log rotation
A process that retains, renames, compresses, or removes log generations.
Question IDKL-102-1097
Environmentsystemd journalctl help / 追跡開始なし
Last technical review2026-08-13
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