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Welcome to Perl 5 by Example By David Medinets. Reading Perl 5 by Example is the easiest way to learn Perl! Teach yourself Internet programming and CGI scripting. CGI is a standard for interfacing external applications with web servers and other information servers and generating dynamic information. CGI, short for the Common Gateway Interface, refers to programs and scripts that live on a Web server and run in response to input from a browser - form submissions, complex links, some image maps - just about anything that isn’t a plain ordinary file involves some sort of CGI script. Perl 5 by Example should be read by anyone seeking to learn Perl. If you don't know any other programming languages, chapters 2 through 7 will give you a solid introduction to the basics. If you already know another language, then skip chapters 2 through 7 to see how Perl differs from other languages and start with Chapter 8, "References". The next three chapters make up Part II, "Intermediate Perl" (Files, Regular Expressions, Perl's inherent reporting ability ). Part III, "Advanced Perl", discusses some of the more difficult aspects of Perl: Using Special Variables, Handling Errors and Signals, Objects, Perl Modules, Debugging Perl. Part IV, "Perl and the Internet", consists of 5 chapters that look at how Perl can be used with the Internet. Chapter 18, "Using Internet Protocols", discusses several of the protocols commonly used on the Internet - such as FTP, SMTP, and POP. Chapter 19, "What is CGI?", eases you into writing scripts that can be executed by remote users. Chapter 20, "Form Processing", discusses HTML forms and how Perl scripts can process form information. Chapter 21, "Using Perl with Web Servers", examines web server log file and how to create HTML web pages using Perl. Chapter 22, "Internet Resources", lists several types of Perl resources that are available on the Internet - such as Usenet Newsgroups and web sites. Perl is free. The full source code and documentation are free to copy, compile, print, and give away. Any programs you write in Perl are yours to do with as you please; there are no royalties to pay and no restrictions on distributing them as far as Perl is concerned. One of the oddities of the language is that its name has been given quite a few definitions. Originally Perl meant the Practical Extraction Report Language. However, programmers also refer to is as the Pathologically Eclectic Rubbish Lister. Or even, Practically Everything Really Likeable. Perl is a state of mind as much as a language grammar.
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