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Execute and format nicely some Perl code embedded in a TWiki page, showing STDOUT and STDERR outputs


This plugin executes and nicely formats a piece of Perl code, together with its STDOUT and STDERR outputs. To avoid improper usage it executes the Perl code in a CPAN:Safe compartment.

Syntax Rules

Enclose Perl code in %PERLSAMPLE{ and }%.

Usage Example

You type: You get: If correctly installed:
print "hello world!";
code return
print "hello world!";
stdout stderr
 1: hello world! 
%PERLSAMPLE{print "hello world!";}%


  • Apply a timeout to the perl execution (spawn a delayed kill process)
  • Limit the output size (disk quota?)
  • Use a random generated file for the output/stderr

Plugin Settings

Plugin settings are stored as preferences variables. To reference a plugin setting write %<plugin>_<setting>%, i.e. %PERLSAMPLEPLUGIN_SHORTDESCRIPTION%

  • One line description, is shown in the TextFormattingRules topic:
    • Set SHORTDESCRIPTION = Execute and format nicely some Perl code embedded in a TWiki page, showing STDOUT and STDERR outputs

Plugin Installation Instructions

Note: You do not need to install anything on the browser to use this plugin. The following instructions are for the administrator who installs the plugin on the TWiki server.

  • Install the CPAN:Safe Perl module (see http://www.cpan.org)
  • Make sure that bin/perl_stdout.tmp and bin/perl_stderr.tmp are writable by the Apache user
  • Download the ZIP file from the Plugin Home (see below)
  • Unzip PerlSamplePlugin.zip in your twiki installation directory. Content:
    File: Description:
    data/TWiki/PerlSamplePlugin.txt Plugin topic
    lib/TWiki/Plugins/PerlSamplePlugin.pm Plugin Perl module
  • Configure the plugin:
    • Run the configure script to enable the plugin
  • Test if the installation was successful:
    • See above example

Plugin Info

Plugin Author: TWiki:Main.AndreaSterbini and TWiki:Main.FrancoBagnoli
Copyright: © 2000-2001 TWiki:Main.FrancoBagnoli
© 2007-2011 TWiki:TWiki.TWikiContributor
License: GPL (GNU General Public License)
Plugin Version: 2011-01-25 (V1.1)
Change History:  
2011-01-25: TWikibug:Item6638: Doc improvements; XHTML fixes -- TWiki:Main.PeterThoeny
2001-11-27: Initial version
TWiki Dependency: $TWiki::Plugins::VERSION 1.1
CPAN Dependencies: CPAN:Safe
Other Dependencies: none
Perl Version: 5.005
Benchmarks: GoodStyle nn%, FormattedSearch nn%, PerlSamplePlugin nn%
Plugin Home: http://TWiki.org/cgi-bin/view/Plugins/PerlSamplePlugin
Feedback: http://TWiki.org/cgi-bin/view/Plugins/PerlSamplePluginDev
Appraisal: http://TWiki.org/cgi-bin/view/Plugins/PerlSamplePluginAppraisal

Related Topics: TWikiPlugins, DeveloperDocumentationCategory, AdminDocumentationCategory, TWikiPreferences

Topic attachments
I Attachment History Action Size Date Who Comment
Unknown file formatmd5 PerlSamplePlugin.md5 r4 r3 r2 r1 manage 0.2 K 2011-01-25 - 08:15 PeterThoeny  
Compressed Zip archivetgz PerlSamplePlugin.tgz r4 r3 r2 r1 manage 4.6 K 2011-01-25 - 08:15 PeterThoeny  
Compressed Zip archivezip PerlSamplePlugin.zip r5 r4 r3 r2 r1 manage 6.2 K 2011-01-25 - 08:15 PeterThoeny  
Unknown file formatEXT PerlSamplePlugin_installer r3 r2 r1 manage 3.4 K 2011-01-25 - 08:15 PeterThoeny  
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Topic revision: r11 - 2013-10-16 - PeterThoeny
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