Showing the current boot's journal | LPIC-1 102-500 Exam original practice question

108.2Standard

Display only journal entries from the current boot.

Which command is appropriate?

Hint 1: Focus on the requirement

Identify what must change and what must remain unchanged. Then choose the command whose scope matches that requirement.

Hint 2: Check each command's role

Separate commands that display information, change state, remove data, or affect a child process.

Detailed explanation

Incorrectjournalctl -k

Incorrect. -k filters kernel messages.

Incorrectjournalctl -f

Incorrect. -f follows new entries from the end.

Correctjournalctl -b

Correct. -b selects the current boot.

Incorrectjournalctl -u boot.service

Incorrect. -u filters a systemd unit.

An example you can run in a temporary verification environment.

journalctl --help 2>&1 | grep -E -- '--boot| -b' | head -n 1

-bまたは--bootのhelp行

Foundation review

Check whether the command acts on the current shell, a new process, an existing process, or a file.

Use the supplied command and compare the output with the expected result.

Question IDKP-108-743

Environmentjournalctl helpの読取のみ

Last technical review2026-08-13