Linux Foundation Certified System Administrator (LFCS) — Question 99

Which character, added to the end of a command, runs that command in the background as a child process of the current shell?

Answer options

• A. !
• B. +
• C. &
• D. %
• E. #

Correct answer: C

Explanation

The correct answer is C, as the ampersand (&) is specifically used in Unix-like operating systems to run commands in the background. The other options do not serve this purpose: '!' is for negation, '+' is used for job control, '%' is for jobs in the shell, and '#' denotes comments.