Retrieve list of used modules and their version numbers

[GrandFather]

The first part of the snippet goes at the top of your script.

The second part goes where you want to list the modules and versions. Sample output looks like:

Tk     804.027
Tk::Event     4.015
Tk::Event::IO     4.008
AutoLoader     5.60
DynaLoader     1.05
Tk::Submethods     4.004
Encode::Unicode     1.40

use strict;
use warnings;

BEGIN {our @usedModules; unshift @INC, sub {push @usedModules, [@_]; r
+eturn undef;}}

our @usedModules;

...

my $versions = '';
for (@usedModules) {
   my $name = $_->[1];

   $name =~ s/\..*//;
   $name =~ s|[\\/]|::|g;
   
   my $version = eval{eval "\$$name\::VERSION"};
   $versions .= "$name \t$version\n" if defined $version;
}

print $versions;

[Fletch]

Module::ScanDeps

[jmcnamara]

Here is a similar one that runs from the command line.

    #!/usr/bin/perl -w

    use strict;

    for my $module (@ARGV) {
        my $version;
        eval "require $module";

        if (not $@) {
            $version = $module->VERSION;
            $version = '(unknown)' if not defined $version;
        }
        else {
            $version = '(not installed)';
        }

        printf "    %-24s\t%s\n",  $module, $version;
    }

    __END__

    # Sample output.

    $ perl modver.pl Encode Foo strict Error::Simple
        Encode                      2.10
        Foo                         (not installed)
        strict                      1.03
        Error::Simple               (unknown)

--
John.

[b10m]

And why not give credit to the module authors? See: Acme::Module::Authors (thanks Tatsuhiko ;-)

[cog]

You might be interested in Installed modules and their versions, too.

[SankoR]

Don't forget about perl -d:Modlist script.pl