But installation of this module choked in its testing phase. From here, we can nose around the files that make up MD5 and see if there's anything we can do. Ultimately, we didn't find any smoking gun. Typing 'exit' returns us to the CPAN shell. MD5 MD5 still failed its self test, but CPAN installed it anyway.
Obedience is good.
It doesn't take a genius to figure out what commands CPAN supports. A simple plea of 'help' reveals all. Differences are summarized, and you can decide whether to upgrade any of your modules. Note that many modules apparently do not have proper versioning, and this command appears to be present in newer version of the CPAN module only. Each module author is assigned a shorthand name, unique from other authors.