I uploaded an alpha version to the CPAN yesterday: http://search.cpan.org/dist/Perl-Metrics-Simple/
There is an included script, in the examples/ directory which produces output like this:
Perl Files: $file_count Line Counts ----------- lines: $lines packages: $package_count subs: $sub_count all main code: $main_stats->{lines} min. sub size: $lines{min} lines max. sub size: $lines{max} lines avg. sub size: $lines{average} lines median sub size: $lines{median} McCabe Complexity ----------------- min. main: $main_complexity{min} max. main: $main_complexity{max} median main: $main_complexity{median} average main: $main_complexity{average} subs: min: $complexity{min} max: $complexity{max} avg: $complexity{average} median: $complexity{median} std. deviation: $complexity{standard_deviation}
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