Perl 5 Internals
by Simon Cozens
Publisher: NetThink 2001
This is a three-hour course which provides a hands-on introduction to how the perl interpreter works internally, how to go about testing and fixing bugs in the interpreter, and what the internals are likely to look like in the future of Perl, Perl 6.
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by Nick Parlante - Stanford University
An introduction to the main features of the Perl language. It's intended for people who know some programming but need an introduction to Perl. Topics: scalar variables, strings, arrays, hash tables, file input and output, regular expressions, etc.
This books describes and explains Perl (Practical Extraction and Report Language), a scripting language that is usually interpreted and is noted for its extensive use of regular expressions and a large module archive CPAN.
Perl 6 is the sixth edition of the Perl programming language, representing a major backwards-incompatible rewrite of the language. This online book is going to introduce the reader to the Perl 6 language and its many features.
by brian d foy - O'Reilly Media
This book isn't a collection of clever tricks, but a way of thinking about Perl programming so you can integrate the real-life problems of debugging, maintenance, configuration, and other tasks you encounter as a working programmer.