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Module::Versions::Report(3) User Contributed Perl Documentation Module::Versions::Report(3)

Module::Versions::Report -- report versions of all modules in memory

  use Module::Versions::Report;
  ...and any code you want...
This will run all your code normally, but then as the Perl interpreter is about to exit, it will print something like:
  Perl v5.6.1 under MSWin32.
   Modules in memory:
    AutoLoader v5.58;
    DynaLoader v1.04;
    Exporter v5.562;
    Module::Versions::Report v1.01;
    HTML::Entities v1.22;
    HTML::HeadParser v2.15;
    HTML::Parser v3.25;
    [... and whatever other modules were loaded that session...]
Consider its use from the command line:
  % perl -MModule::Versions::Report -MLWP -e 1
  Perl v5.6.1 under MSWin32.
   Modules in memory:
    AutoLoader v5.58;

I often get email from someone reporting a bug in a module I've written. I email back, asking what version of the module it is, what version of Perl on what OS, and sometimes what version of some relevent third library (like XML::Parser). They reply, saying "Perl 5". I say "I need the exact version, as reported by "perl -v"". They tell me. And I say "I, uh, also asked about the version of my module and XML::Parser [or whatever]". They say "Oh yeah. It's 2.27". "Is that my module or XML::Parser?" "XML::Parser." "OK, and what about my module's version?" "Ohyeah. That's 3.11." By this time, days have passed, and what should have been a simple operation -- reporting the version of Perl and relevent modules, has been needlessly complicated.
This module is for simplifying that task. If you add "use Module::Versions::Report;" to a program (especially handy if your program is one that demonstrates a bug in some module), then when the program has finished running, you well get a report detailing the all modules in memory, and noting the version of each (for modules that defined a $VERSION, at least).

If this package is imported then END block is set, and report printed to stdout on a program exit, so use "use Module::Versions::Report;" if you need a report on exit or "use Module::Versions::Report ();" otherwise and call report or print_report functions yourself.

The first one returns preformatted report as a string, the latter outputs a report to stdout.

Copyright 2001-2003 Sean M. Burke. This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
This program is distributed in the hope that it will be useful, but without any warranty; without even the implied warranty of merchantability or fitness for a particular purpose.

Ruslan U. Zakirov <>

Sean M. Burke, <>
2008-10-21 perl v5.28.1

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