Find out the Perl modules installed and their versions

It is actually just a one-liner:
$ whichpm.sh module::name perl_bin_path It prints out all the Perl modules accessible by the particular Perl interpreter, and then the version of the given module.
$ cat whichpm.sh #!/bin/bash echo 'print map { sprintf( "%20s : %s\n", $_, $INC{$_} ) } sort keys %INC; print "\n '$1' version : $'$1'::VERSION\n\n"' | $2 "-M$1" $ ./whichpm.sh LWP::UserAgent /usr/bin/perl Carp.pm : /System/Library/Perl/5.18/Carp.pm LWP.pm : /Library/Perl/5.18/LWP.pm LWP/UserAgent.pm : /Library/Perl/5.18/LWP/UserAgent.pm Storable.pm : /System/Library/Perl/5.18/darwin-thread-multi-2level/Storable.pm Time/Local.pm : /System/Library/Perl/5.18/Time/Local.pm URI.pm : /System/Library/Perl/Extras/5.18/URI.pm strict.pm : /System/Library/Perl/5.18/strict.pm vars.pm : /System/Library/Perl/5.18/vars.pm warnings.pm : /System/Library/Perl/5.18/warnings.pm LWP::UserAgent version : 6.13

The reason for the 2nd argument (perl interpreter) is that there could be multiple Perl interpreters on a system and they tend to have different version and also the supporting modules.

Of course, to make it a reusable script, you will have to add help message, input argument checking, etc.

Enjoy!