Which command is used to change protection mode of files starting with the string emp and ending with 1,2, or 3 ?
Correct answer: A. chmod u+x emp[1-3]
- A. chmod u+x emp[1-3]
- B. chmod 777 emp*
- C. chmod u+r ??? emp
- D. chmod 222 emp?
Explanation
The pattern `emp[1-3]` matches names beginning with `emp` and ending in 1, 2, or 3, while `chmod u+x` changes the owner's execute permission. The other patterns either match the wrong filenames or change different permissions.
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