(USING AWK) finger the users on our system that have the letter r in their first name, or last name, but nowhere else. Note also that the r can be r or R.
Output would be similar to:
tring Tong Ring 4 church (helix.cse.ogi.edu)
tzhou Roger Ring 0:15 p2 helix (zephyr.cse.ogi.e)
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