User guide

Perl

The main site for the development of Ruby is hosted on http://www.ruby-lang.org. The http://www.ruby-

doc.org site also contains Ruby documentation.

3.3.9. Perl

The perl package adds support for the Perl programming language. This package provides Perl core

modules, the Perl Language Interpreter, and the PerlDoc tool.

Red Hat also provides various perl modules in package form; these packages are named with the

perl-* prefix. These modules provide stand-alone applications, language extensions, Perl libraries,

and external library bindings.

3.3.9.1. Perl Updates

Red Hat Enterprise Linux 6.0 ships with perl-5.10.1. If you are running an older system, rebuild or

alter external modules and applications accordingly in order to ensure optimum performance.

For a full list of the differences between the Perl versions refer to the following documents:

• Perl 5.10 delta: http://perldoc.perl.org/perl5100delta.html

• Perl 5.10.1 delta: http://perldoc.perl.org/perl5101delta.html

3.3.9.2. Installation

Perl's capabilities can be extended by installing additional modules. These modules come in the

following forms:

Official Red Hat RPM

The official module packages can be installed with yum or rpm from the Red Hat Enterprise Linux

repositories. They are installed to /usr/share/perl5 and either /usr/lib/perl5 for 32bit

architectures or /usr/lib64/perl5 for 64bit architectures.

Modules from CPAN

Use the cpan tool provided by the perl-CPAN package to install modules directly from the CPAN

website. They are installed to /usr/local/share/perl5 and either /usr/local/lib/perl5

for 32bit architectures or /usr/local/lib64/perl5 for 64bit architectures.

Third party module package

Third party modules are installed to /usr/share/perl5/vendor_perl and either /usr/lib/

perl5/vendor_perl for 32bit architectures or /usr/lib64/perl5/vendor_perl for 64bit

architectures.

Custom module package / manually installed module

These should be placed in the same directories as third party modules. That is, /usr/share/

perl5/vendor_perl and either /usr/lib/perl5/vendor_perl for 32bit architectures or /

usr/lib64/perl5/vendor_perl for 64bit architectures.

Warning

If an official version of a module is already installed, installing its non-official version can create

conflicts in the /usr/share/man directory.