Q. If you are a root user, how can you enable execution only for the owner of the file “myfile”?
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(A)
$ chmod +x myfile
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(B)
$ chmod u+x myfile
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(C)
$ chmod a+x myfile
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(D)
$ chmod U+X myfile
✅ Correct Answer: (B)
$ chmod u+x myfile
Explanation: u+x grants the execution right to the file owner.