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We can actually place a fair number of files on the command line, and they'll all be processed together. For example: > perl nl2.plx nlexample.txt nl2.plx. Perl by Example is not just a beginner's guide but a complete guide to Perl. It covers many aspects of what Perl can do, from basic syntax to regular Perl is a programming language which can be used for a large variety of tasks. A typical simple use of. Perl would be for extracting information from a text The appendices contain a complete list of functions and definitions, command- line switches, special variables, popular modules, and the Perl debugger; a Before you start practicing with various types of examples given in this reference, we are making an assumption that you have prior exposure to C programmingChapter 16: GUI Example: Man Page Viewer. Chapter 17: Template-Driven Code Generation. Chapter 18: Extending Perl:A First Course. Will see examples as we go • If you see Perl code that appears to be missing argument(s), chances are that. $_ is involved print; # same as print (”$_”);.