changed.pl	-- Tells which files have changed since the last run
dup-files.pl	-- Reports duplicate files
    test	-- Directory containing test files for dup-files.pl
    dup.txt	-- Sample output for for dup-files.pl

help.pm		-- Module to add --help command to your program
    help_test.pl -- Tests help.pm

money.pl	-- Currency conversion program

remind.pl	-- Date reminding program
    remind.test	-- Test data for remind.pl
    cal.txt	-- Sample calendar file for remind.pl

temp.pl		-- Temperature conversion program.
