A system administrator needs to start a lengthy data backup script named backup.sh located in the current directory. The administrator wants to run the script but needs to continue using the same terminal for other tasks immediately after launching it. Which of the following commands will accomplish this by running the script in the background?
The correct command is ./backup.sh &. The ampersand (&) is a shell control operator that executes a command in the background. This immediately returns the command prompt to the user, allowing them to continue working while the script runs. The shell does not wait for the background command to finish. The && operator is a logical AND; it runs the second command only if the first one succeeds. The bg command is used to resume a stopped job in the background, not to start a new one directly. The fg command brings a background job to the foreground, which is the opposite of the desired action.
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What does the ampersand (`&`) operator do in a Linux shell?
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How does the `bg` command differ from using `&`?
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What happens if you use `fg` on a background job?
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CompTIA Linux+ XK0-006 (V8)
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