Write a bash script named hw13-2 that accepts a list of userids on the command line and a) If the userid has unread mail in /var/spool/mail, display "User has unread mail" b) If the userid has no unread mail in /var/spool/mail, display "User does not have mail"

SAMPLE COMMAND AND OUTPUT: > hw13-2 David.David random.student David.David has unread mail random.student does not have mail