Which of the following special shell variables is used to process number of the last background job ?
Correct answer: A. $!
- A. $!
- B. $#
- C. 0
- D. $*
Explanation
The special variable `$!` expands to the process ID of the most recently started background job. `$#` gives the number of positional parameters, and `$*` expands positional parameters.
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