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The access to the use of at and batch is restricted and controlled by ___ and ____

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The access to the use of at and batch is restricted and controlled by ___ and ____

(a) at.allow, batch.allow

(b) at.allow, at.deny

(c) at.allow , batch.deny

(d) batch. deny, batch.allow

This question was addressed to me by my college professor while I was bunking the class.

My doubt stems from Administrator Specific Commands and Privileges in division Essential Shell Programming of Unix

1 Answer

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Best answer
Right choice is (b) at.allow, at.deny

The best explanation: The access to the use of at and batch is restricted and controlled by the files at.allow and at.deny. If at.allow is present, only those users which are listed in this file can use at and batch. If this file is not present then the system checks at.deny for users who are blocked from using these commands.

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