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Listing all of the perl modules installed

by Anonymous Monk
on Oct 28, 2010 at 20:28 UTC ( #868141=perlquestion: print w/replies, xml ) Need Help??

Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

Dear all

Please can you tell me how you find all of the perl modules installed under Linux. I have found this command which does list some perl modules in /usr/lib/perl5 and /usr/share/perl5 but I get the error 'Can't stat /usr/local/lib/site_perl: No such file or directory at -e line 1'
My path is /usr/local/lib/perl not site_perl

perl -MFile::Find=find -MFile::Spec::Functions -Tlwe \ 'find { wanted => sub { print canonpath $_ if /\.pm\z/ }, no_chdir => +1 }, @INC'
It would also be great to know how to modify that command to show files that match a particular text string

YOur help is much appreciated

Replies are listed 'Best First'.
Re: Listing all of the perl modules installed
by toolic (Bishop) on Oct 28, 2010 at 23:36 UTC
Re: Listing all of the perl modules installed
by Tux (Canon) on Oct 29, 2010 at 06:14 UTC

    I bet searching here on monks would have given you a few examples of how monks do this. There is a plethora of scripts available by now as there are many ways to answer the question.

    I also wrote a script myself, but with a few additions to make it easier to find module not (yet) installed, so that I don't have to dig on CPAN when I'm looking for a module that does XML/XPM/CSV/mysql/...

    Note that my script works based on the list of modules available as seen by CPAN, so it will not find modules that were manually copied into the perl tree.

    $ modlist -? usage: modlist [ -a AUT ] [ -r ] [ -i ] [ -nc ] [ <pattern> ] -a | --author=AUTHOR_ID Only modules from author -r | --registered Only registered modules -i | --installed Only installed modules -n | --new Only new modules -c | --csv Output module and version as CSV <pattern> Only modules that match pattern $ modlist -i xpm Module name Description + Version Bundle::Image::Info::XPM + 0.01 Image::Info::XPM + 1.07 Image::Xpm + 1.12 Tk::XPMs + 1.11 $ modlist -r peek Module name Description + Version Apache::Peek Devel::Peek for mod_perl Data::Peek A collection of low-level debug facilities + 0.31 Devel::Peek Peek at internal representation of Perl data + 1.04 Core since 5.006 1.00_01 in 5.010001 + 1.04 POE::API::Peek Peek into the internals of a running POE env $

    It also does colorizing (when available), shows if it is a CORE module (using Module::Corelist), since when and what version in core,

    Enjoy, Have FUN! H.Merijn
      Yeah, I did the search as suggested, and found it lacking. All I want is a way to use Module::Corelist to list the modules that are installed with perl on my box. Pretty simple, I'd say, but nothing I've found here on this site, seems to just do that. I read the doc from CPAN on Module::Corelist, and came up empty there also. Is this really that tough of a request? Just a simple script that uses Module::Corelist to list the installed modules. That's it.
        Revised comment: Thank you, I did finally find one. Not simple by any means, but I did find one.
Re: Listing all of the perl modules installed
by bingos (Vicar) on Oct 28, 2010 at 21:21 UTC

    I have a script that finds and lists all the installed modules on a system

    A slight variation on that theme for listing all the distributions that are installed

Re: Listing all of the perl modules installed
by kejohm (Hermit) on Oct 29, 2010 at 03:09 UTC

    You could try using the ExtUtils::Installed and Module::CoreList modules. Here is an example that finds all modules and displays the version numbers of each:

    #!perl use strict; use warnings; use feature qw(:5.12); use ExtUtils::Installed; use Module::CoreList; use Module::Info; my $inst = ExtUtils::Installed->new(); my $count = 0; my %modules; foreach ( $inst->modules() ) { next if m/^[[:lower:]]/; # skip pragmas next if $_ eq 'Perl'; # core modules aren't present in this +list, # instead coming under the name Perl my $version = $inst->version($_); $version = $version->stringify if ref $version; # version may be r +eturned as # a version object $modules{$_} = { name => $_, version => $version }; $count++; } foreach ( Module::CoreList->find_modules() ) { next if m/^[[:lower:]]/; # skip pragmas my $module = Module::Info->new_from_module($_) or next; $modules{$_} = { name => $_, version => $module->version // q(???) + }; $count++; } foreach ( sort keys %modules ) { say "$_ v$modules{$_}{version}"; } say "\nModules: $count"; __END__

    Update: Links fixed.

Re: Listing all of the perl modules installed
by Khen1950fx (Canon) on Oct 28, 2010 at 22:34 UTC
    Here's an easy way:

    pminst - shows all installed modules
    pminst -l - shows all installed modules with full path

    To match a particular text string, I'll use 'sample':

    pminst '(?i)sample'

      unfortunately, pminst is part of pmtools, which isn't part of the core. And wouldn't work anyway where I work.
Re: Listing all of the perl modules installed (autobundle)
by Anonymous Monk on Feb 01, 2013 at 14:39 UTC
Re: Listing all of the perl modules installed
by PerlPundit (Initiate) on Aug 25, 2015 at 10:44 UTC
    The following command can be helpful in finding the installed perl modules : instmodsh It will give some options - Press l and enter This will list down all the installed modules. Hope it Helps!!!!!!!!!!!!!!! :-)
        Thanks for the info Anon: I haven't tried it on debian yet. What about lsmod ?- I think this can be used in debian.
      Yup, that did exactly what I needed. Thanks
Re: Listing all of the perl modules installed
by Anonymous Monk on Feb 01, 2013 at 03:20 UTC

    To see all the modules you've installed using something like cpanm, do: perldoc perllocal

    To see a list of system packages on a Debian-based system (that is, ones installed via apt), do:

    dpkg -l | grep 'lib.*\?-perl'

      Also, corelist can show you all core modules installed for any version of Perl 5 you care to ask about, for example:

      corelist -v 5.16.2

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