Cancelling one at job | LPIC-1 102-500 Exam original practice question

107.2Standard

atq shows unwanted job ID 42.

Remove only job 42 and keep other queued jobs.

Which command is appropriate?

Hint 1: Focus on scheduling scope

Separate recurring and one-time jobs, access-control files, and execution context before comparing the choices.

Hint 2: Key terms

Review the short definitions of recurring jobs, one-time jobs, and scheduling controls.

atrm: A command that removes a pending at job from the queue by job ID.
Job ID: The identifier shown by atq for selecting one queued job.
kill: A command that sends a signal to a running process rather than deleting a queued job.
Queued versus running: The distinction between a job still in the at queue and a process already executing.

Detailed explanation

Correctatrm 42

Correct. atrm 42 removes the queued at job with ID 42.

Incorrectatq 42

Incorrect. atq lists jobs rather than deleting one.

Incorrectcrontab -r 42

Incorrect. crontab -r operates on cron entries.

Incorrectkill 42

Incorrect. kill treats 42 as a PID, not an at job ID.

An example you can run in a temporary verification environment.

printf '%s\n' 'job id: 42' 'remove command: atrm 42'

job id: 42
remove command: atrm 42

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-107-697

Environment合成ジョブ番号による構文確認

Last technical review2026-08-13

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