From Wsms

Perl is a programming language.

FAQ

The perl FAQ is accessible from the command line in Linux. To see how to find out which modules are installed on your system all you need to do is:

[ggeller@arthur ~]$ perldoc -q installed

And you get:

Found in /usr/lib/perl5/5.8.8/pod/perlfaq3.pod
       How do I find which modules are installed on my system?

       You can use the ExtUtils::Installed module to show all installed distributions, although it can take awhile to do its magic.  The
       standard library which comes with Perl just shows up as "Perl" (although you can get those with Module::CoreList).

               use ExtUtils::Installed;

               my $inst    = ExtUtils::Installed->new();
               my @modules = $inst->modules();

       If you want a list of all of the Perl module filenames, you can use File::Find::Rule.

               use File::Find::Rule;

               my @files = File::Find::Rule->file()->name( ’*.pm’ )->in( @INC );

       If you do not have that module, you can do the same thing with File::Find which is part of the standard library.

           use File::Find;
           my @files;

           find(
             sub {
               push @files, $File::Find::name
                       if -f $File::Find::name && /\.pm$/
               },

             @INC
             );

               print join "\n", @files;

       If you simply need to quickly check to see if a module is available, you can check for its documentation.  If you can read the docu-
       mentation the module is most likely installed.  If you cannot read the documentation, the module might not have any (in rare cases).

               prompt% perldoc Module::Name

       You can also try to include the module in a one-liner to see if perl finds it.

               perl -MModule::Name -e1

See also

The Duct Tape of the Internet by Randal L. Schwartz http://www.samag.com/documents/s=7762/sam0301m/0301m.htm
Perl_programming_language_class_notes
Perl_programming_language
Pod
Perl/Cwd
Perl/Perldoc
Perl/LWP
Perl/YAPE
Perl/File::Basename
Perl/File::Next
Perl/File::Temp
20070301a Installing_Perl_Modules_on_Linux using CPAN
Perl_scripts
Perl/Substr
Perl/Damian Conway
Perl/SWIG
Perl/Strings
perl/quotemeta