While accessing mail through the mail command interface, a user sees 5 new messages

The answer is "print 2".

Explanation:

The mail command, which is also known as the return path, bounce address, as well as mfrom, and sends the back address. This command is used to set the message receiver, order RCPT. It's also composed of the message for the header, and it is the empty line of the message body, and in this command to read the second message we use the print 2 message.

it’s not cheating, it’s called having a helpful hand at a time in need :)

Explanation: