====== Perl ======

[[wp>Perl]] is the acronym for "Practical Extraction and Reporting Language".

  * www.perl.org -- Homepage\\ <wrap download>[[https://www.perl.org/get.html|Download Page]]</wrap>

===== Documentation: =====

  * [[http://perldoc.perl.org/|perldoc.perl.org]]

==== Quick Reference ====

  * [[http://www.cs.tut.fi/~jkorpela/perl/regexp.html|Regular expressions in Perl]]

==== Tutorials ====

  * https://perlmaven.com/perl-tutorial
  * [[http://users.cs.cf.ac.uk/Dave.Marshall/PERL/|Practical Perl Programming]]
  * [[https://code-maven.com/slides/perl-programming/|Perl Programming]]
  * [[http://www.tizag.com/perlT/index.php|Perl Tutorial]]

===== Validation: =====

  * www.perlcritic.com
  * [[http://me.veekun.com/blog/2011/04/13/perl-worst-practices/|Perl Worst Practices]]

===== Resources: =====

  * http://www.cpan.org -- The Comprehensive Perl Archive Network
  * http://www.cpan.org/ports -- Perl Ports
  * https://www.cpan.org/SITES.html

==== Recommended Reading ====

  * {{https://www.geos.ed.ac.uk/~bmg/software/Perl%20Books/OReilly.Perl.Cookbook.pdf|Perl Cookbook}}
  * [[http://de.selfhtml.org/perl/intro.htm|Einführung in Perl]] -- A comprehensive introduction for beginners (focused on CGI programming)\\ More details on <wrap info>[[http://de.selfhtml.org/perl/module/index.htm|Perl-Module]]</wrap>
  * [[http://docstore.mik.ua/orelly/perl3/lwp/index.htm|Perl & LWP]] -- The Perl web client library. 

===== Perl by Example =====

  * Present a //Usage// message. :TODO:
  * [[http://perthon.sourceforge.net/|Perthon]] -- Python to Perl Language Translation

==== One Liners ====

  * [[http://www.catonmat.net/download/perl1line.txt|Useful One-Line Scripts for Perl]]
  * https://code-maven.com/slides/perl-programming/oneliners|

==== Command Line Options ====

  * [[http://www.perlmonks.org/?node_id=88222|Parsing your script's command line]]

==== Sleep ====

  * [[https://stackoverflow.com/questions/896904/how-do-i-sleep-for-a-millisecond-in-perl|How do I sleep for a millisecond in Perl?]]

==== Serial Interface ====

  * [[http://www.perlmonks.org/?node_id=88966|Platform-independent Serial Port code]]
  * [[http://www.horter.de/i2c/i2c-beispiele/beisp_perl_1.html|Ansteuerung des I2C-RS232-Modems mit Perl - Temperatur lesen vom LM75 mit dem I2C-RS232-Modem]]


==== Here Documents ====

  * [[http://www.perlmonks.org/?node_id=731155|Heredoc with system call]]
  * [[https://docstore.mik.ua/orelly/perl/cookbook/ch01_12.htm|Indenting Here Documents]]

==== Perl and CSV ====

  * [[http://search.cpan.org/~makamaka/Text-CSV-1.21/lib/Text/CSV.pm|Text::CSV only]]

==== Perl and Excel ====

  * [[https://www.thegeekstuff.com/2011/12/perl-and-excel/|How to Read, Write, Parse Excel Files using Perl]]

==== Perl and Micro$oft Windows ====

  * [http://www.perlmonks.org/?node_id=984508|Perl on Windows Best Practices?]]
  * [[http://www.perlmonks.org/?node_id=773754|How to use Win32::API to access variable in DLL file?]]

==== HTML ====

  * [[http://www.perl.com/pub/2006/01/19/analyzing_html.html|Analyzing HTML with Perl]]
  * [[http://lwp.interglacial.com/ch10_01.htm|Modifying HTML with Trees]]
  * [[http://stackoverflow.com/questions/12702597/search-a-tag-and-delete-its-content-including-the-tag-itself-in-perl|Search a tag and delete its content including the tag itself in Perl]]
  * [[http://stackoverflow.com/questions/5028505/extract-contents-of-paragraph-tag-using-a-perl-one-liner|Extract contents of paragraph tag using a Perl one liner]]
  * [[http://www.perlmonks.org/?node_id=481862|How do I create non-breaking space (&nbsp; ) with HTML::Element?]]
  * Related Perl Modules
    * [[http://search.cpan.org/~cjm/HTML-Tree-5.03/lib/HTML/TreeBuilder.pm|HTML::TreeBuilder]]
    * [[http://search.cpan.org/~cjm/HTML-Tree-5.03/lib/HTML/Element.pm|HTML::Element]]

==== Files ====

  * [[http://www.perlmonks.org/?node_id=217378|Beginners guide to File::Find]] -- and even more advanced uses (e.g. the pre- and postprocess feature).
  * [[https://stackoverflow.com/questions/10948854/perl-how-to-split-a-file|Perl: how to split a file?]] [(https://web.archive.org/web/20200710064442/https://stackoverflow.com/questions/10948854/perl-how-to-split-a-file)] -- split file at matching separator string


===== Frequently Asked Questions =====

  * [[https://stackoverflow.com/questions/1237286/how-can-i-compile-my-perl-script-so-it-can-be-executed-on-systems-without-perl-i|How can I compile my Perl script so it can be executed on systems without perl installed?]]

==== How to install Perl modules from CPAN? ====

The module //HTML::Template// for example, may be installed from shell with below command

  perl -MCPAN -e 'install HTML::Template'

Source: http://perl.about.com/od/packagesmodules/qt/perlcpan.htm

==== How can I programmatically convert Word doc or docx files into text files? ====

[[http://stackoverflow.com/questions/1110409/how-can-i-programmatically-convert-word-doc-or-docx-files-into-text-files|Here]] is an example using [[http://search.cpan.org/~jdb/Win32-OLE-0.1709/lib/Win32/OLE.pm|Win32::OLE]].