XK0-006 System Management Practice Question

A user wants to run a command that will continue running even after the user logs out. Which command should be used?

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

nohup command &

nohup makes the command immune to hangups and runs in the background.

Answer analysis

For each option: why learners choose it and why it is or isn't the right answer here.

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disown command
Why it's wrong here
disown removes the job from the shell's job table, preventing SIGHUP from being sent, but it only affects jobs already running in that shell and cannot launch a new command detached from the terminal. It is tempting because it is the standard remedy for keeping an existing background job alive after logout.
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command &
Why it's wrong here
Backgrounds the command but it will be terminated when the shell exits.
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bg command
Why it's wrong here
bg resumes a suspended job in the background, but does not prevent termination on logout.
✓
nohup command &
Why this is correct
nohup makes the process immune to SIGHUP, so it survives the terminal hangup when the user logs out; the trailing & backgrounds it so control returns immediately. Together they satisfy the requirement that the command keep running after logout.

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