What modules are distributed with Perl?

Question

How do I know what modules are distributed with Perl?

My first guess is that the core modules listed here are always included, though I cannot find this stated explicitl

Answer 1

This question is a little less important now (I have root access on the eventual target machine so I'll just be installing the packages I need) but in case anyone is interested here's what I did:

First, run this code on each of the target systems:

foreach my $dir (@INC) {
    print "Directory: $dir\n";
    if (-d "$dir") {
        my @modules = `find $dir/ -name "*.pm"`;
        foreach my $m (@modules) {
            my $label = $m;
            $label =~ s|\n$||;
            $label =~ s|//+|/|g;
            $label =~ s|^$dir/||;
            print "$label\n";
        }
    }
}

Note you need a *nix system with a find command. Dump the output into three files, sorted. Then use commands like this (from memory):

grep -F -x -f list-1.txt list2.txt > list-12.txt
grep -F -x -f list-12.txt list3.txt > list-123.txt

Now list-123.txt should have the list of shared modules, more or less.

For what it's worth, all three systems shared a few extra modules, notably the XML::Parser modules.