$ perl XP_efficiency.pl 

        Usage: perl XP_efficiency.pl --sort_by (age|posts)

        Options:
            --sort_by,       -s: Rank monks by XP/posts or by XP/age
            --limit,         -l: Limit results to this many
            --order,         -o: Sort order (asc|desc)
            --recent,        -r: Limit to monks seen in the last n weeks
            --only_include,  -i: Skip all monks except this/these one(s)
            --force_include, -f: Include this/these monk(s) even if -l is set
            --min_posts,     -m: Exclude monks with fewer than this many posts
            --no_adjust,     -n: Don't deduct 0.5 XP for each day of monkhood
            --help,          -h: Print this help