Perhaps, it is useful to see which files were included during execution, in order to have a reference? 

use strict;
use warnings;


#-- example
use Getopt::Long;

#-- example / somewhere in your code or imported modules
require Math::BigInt;

#-- ... more ...

#-- at the end, we should have seen them all
END {

  print "VERSION / MODULE / PATH:\n";

  for my $module (sort keys %INC) {

    my $mod_name = $module;
    $mod_name =~ s{/}{::};
    $mod_name =~ s/\.pm$//i;

    #-- perhaps, the module author followed the convention?
    my $ver = eval "\$${mod_name}::VERSION" || '?';

    printf "%-8s %-35s %s\n",
      $ver,
      $mod_name,
      $INC{$module};
  }

}

[download]

Example output on my host: 

VERSION / MODULE / PATH:
1.3301   Carp                                /opt/perl-5.18.2/lib/site
+_perl/5.18.2/Carp.pm
5.70     Exporter                            /opt/perl-5.18.2/lib/site
+_perl/5.18.2/Exporter.pm
5.70     Exporter::Heavy                     /opt/perl-5.18.2/lib/site
+_perl/5.18.2/Exporter/Heavy.pm
2.45     Getopt::Long                        /opt/perl-5.18.2/lib/site
+_perl/5.18.2/Getopt/Long.pm
1.9993   Math::BigInt                        /opt/perl-5.18.2/lib/5.18
+.2/Math/BigInt.pm
1.27     constant                            /opt/perl-5.18.2/lib/5.18
+.2/constant.pm
1.22     overload                            /opt/perl-5.18.2/lib/5.18
+.2/overload.pm
0.02     overloading                         /opt/perl-5.18.2/lib/5.18
+.2/overloading.pm
1.07     strict                              /opt/perl-5.18.2/lib/5.18
+.2/strict.pm
1.03     vars                                /opt/perl-5.18.2/lib/5.18
+.2/vars.pm
1.18     warnings                            /opt/perl-5.18.2/lib/5.18
+.2/warnings.pm
1.02     warnings::register                  /opt/perl-5.18.2/lib/5.18
+.2/warnings/register.pm

[download]

In reply to Re: How do I know if a package is on my server? by Perlbotics
in thread How do I know if a package is on my server? by gsd4me

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