Multiple choice technology operating systems

What following command perform? "at 12pm Jul 31 ls date "

  1. Execute "ls" and "date" command at 12pm on 31st July.

  2. Execute "ls" and "date" command at 12pm on 31st July and mail output to owner of task.(User who had initiated that at command)

  3. Execute "ls" and "date" command at 12pm on 31st July and mail output to root.

  4. Execute "ls" and "date" command at 12pm on 31st July but no output.
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B Correct answer
Explanation

The Unix 'at' command, by default, mails the output of the scheduled command(s) to the user who initiated the 'at' command. This is standard behavior - the output isn't discarded or mailed to root unless specifically configured.

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