Use the perl debugger. Do perl -d <script>. Once in the debugger switch to the module:
Defaria:perl -de 0
Loading DB routines from perl5db.pl version 1.33
Editor support available.
Enter h or `h h' for help, or `man perldebug' for more help.
main::(-e:1): 0
DB<1> use CGI;
DB<2> f CGI
Choosing /usr/share/perl/5.14/CGI/Util.pm matching `CGI':
1 package CGI::Util;
2
3: use strict;
4: use vars qw($VERSION @EXPORT_OK @ISA @A2E @E2A);
5: require Exporter;
6: @ISA = qw(Exporter);
7: @EXPORT_OK = qw(rearrange rearrange_header make_attributes unesc
+ape escape
8 expires ebcdic2ascii ascii2ebcdic);
9
10: $VERSION = '3.51';
DB<3>
You'll notice the line starting with "Choosing". That tells you the path to the module that perl actually loaded.
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