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What's the difference between "perl" and "Perl"?

One bit. Oh, you weren't talking ASCII? :-) Larry now uses "Perl" to
signify the language proper and "perl" the implementation of it, i.e.
the current interpreter. Hence Tom's quip that "Nothing but perl can
parse Perl." You may or may not choose to follow this usage. For
example, parallelism means "awk and perl" and "Python and Perl" look
OK, while "awk and Perl" and "Python and perl" do not. But never write
"PERL", because perl is not an acronym, apocryphal folklore and post-
facto expansions notwithstanding.
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DESCRIPTION
Perl is a language optimized for scanning arbitrary text files,
extracting information from those text files, and printing reports
based on that information. It's also a good language for many system
management tasks. The language is intended to be practical (easy to
use, efficient, complete) rather than beautiful (tiny, elegant, mini-
mal).
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