Alien::Packages(3)

NAME
Alien::Packages - Find information of installed packages

SYNOPSIS
    my $ap = Alien::Packages->new();

    my @packages = $ap->list_packages();
    foreach my $pkg (@packages)
    {
        print "$pkg->[0] version $pkg->[1]: $pkg->[2]\n";
    }

    my %perl_owners = $ap->list_fileowners( File::Spec->rel2abs( $^X ) );
    while( my ($fn, $pkg) = each( %perl_owners ) )
    {
        print "$fn is provided by ", join( ", ", @$pkg ), "\n";
    }

SUBROUTINES/METHODS

  new
Instantiates new Alien::Packages object. Attributes can be specified for used finder (of type Module::Pluggable::Object). Additionally,

"only_loaded"
    Use only plugins which are still loaded.

can be specified with a true value. This forces to grep %INC instead of using Module::Pluggable.

  list_packages
Lists the installed packages on the system (if the caller has the permission to do).

Results in a list of array references, whereby each item contains:

  {
      PkgType => $pkg_type, # e.g. 'dpkg', 'pkgsrc', ...
      Package => $pkg_name,
      Version => $version,
      Summary => $summary,
  }

"type" is the packager type, e.g. rpm, lpp or pkgsrc.

  list_fileowners
Provides an association between files on the system and the package which reference it (has presumably installed it).

Returns a hash with the files names as key and a list of referencing package names as value:

  '/absolute/path/to/file' =>
      [
          {
              PkgType => $pkg_type,
              Package => $pkg_name,
          }
      ],
  ...

AUTHOR
Jens Rehsack, "<rehsack at cpan.org>"

GETTING HELP
To get novice help, it's usually recommended to ask on typical platforms like PerlMonks. To help you make the best use of the PerlMonks platform, and any other lists or forums you may use, I strongly recommend that you read "How To Ask Questions The Smart Way" by Eric Raymond: <http://www.catb.org/~esr/faqs/smart-questions.html>.

If you really asks a question what noone can answer, please drop me a note with the question URL to either my CPAN address or on "irc.perl.org" in the channels "#toolchain" or "#devops". I'll try to answer as best as I can (and as soon, as possible, of course).

  Where can I go for help with a concrete version?
Bugs and feature requests are accepted against the latest version only. To get patches for earlier versions, you need to get an agreement with a developer of your choice - who may or not report the issue and a suggested fix upstream (depends on the license you have chosen).

  Business support and maintenance
For business support you can contact Jens via his CPAN email address rehsackATcpan.org. Please keep in mind that business support is neither available for free nor are you eligible to receive any support based on the license distributed with this package.

BUGS
This module is alpha software, the API may change in future releases. See Alien::Packages::Roadmap for more details.

Please report any bugs or feature requests to "bug-alien-packages at rt.cpan.org", or through the web interface at <http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Alien-Packages>. I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.

SUPPORT
You can find documentation for this module with the perldoc command.

    perldoc Alien::Packages

You can also look for information at:

•   RT: CPAN's request tracker

    <http://rt.cpan.org/NoAuth/Bugs.html?Dist=Alien-Packages>

•   AnnoCPAN: Annotated CPAN documentation

    <http://annocpan.org/dist/Alien-Packages>

•   CPAN Ratings

    <http://cpanratings.perl.org/d/Alien-Packages>

•   Search CPAN

    <http://search.cpan.org/dist/Alien-Packages/>

If you think you've found a bug then please also read "How to Report Bugs Effectively" by Simon Tatham: <http://www.chiark.greenend.org.uk/~sgtatham/bugs.html>.

RESOURCES AND CONTRIBUTIONS
There're several ways how you can help to support future development: You can hire the author to implement the features you require at most (this also defines priorities), you can negotiate a support and maintenance contract with the company of the author and you can provide tests and patches. Further, you can submit documentation and links to resources to improve or add packaging systems or grant remote access to machines with insufficient supported packaging tools.

ACKNOWLEDGEMENTS

LICENSE AND COPYRIGHT
Copyright 2010 Jens Rehsack.

This program is free software; you can redistribute it and/or modify it under the terms of either: the GNU General Public License as published by the Free Software Foundation; or the Artistic License.

See http://dev.perl.org/licenses/ for more information.