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There is also a Perl core module named CPAN; it is usually differentiated from the repository itself by using the name CPAN.pm. CPAN.pm is mainly an interactive shell which can be used to search for, download, and install distributions. An interactive shell called cpan is also provided in the Perl core, and is the usual way of running CPAN.pm ...
Perl Package Manager (PPM) is a Perl utility intended to simplify the tasks of locating, installing, upgrading and removing software packages. It can determine if the most recent version of a software package is installed on a system, and can install or upgrade that package from a local or remote host.
Repositories may be solely for particular programs, such as CPAN for the Perl programming language, or for an entire operating system. Operators of such repositories typically provide a package management system , tools intended to search for, install and otherwise manipulate software packages from the repositories.
Like many other Perl modules, PAR is primarily distributed via the CPAN where numerous extensions have been published. These include: These include: PAR::WebStart , a Perl implementation of Java Web Start that allows users to start application software directly from the Internet using a web browser .
A module defines its source code to be in a package (much like a Java package), the Perl mechanism for defining namespaces, e.g. CGI or Net::FTP or XML::Parser; the file structure mirrors the namespace structure (e.g. the source code for Net::FTP is in Net/FTP.pm).
Tim Bunce took the lead and began specifying what would become the DBI module in 1994 upon the release of perl5 which eliminated the need for bespoke compilation in favor of dynamic, invocation time loading of libraries (modules). [2] As of 2010 the Perl community maintains DBI as a CPAN module in accordance with the open-source model.
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Various non-standard but widely used Perl modules. These mostly relate to ease of installation of further extensions from the CPAN, but also include various tools that enhance the ability to install packages from other sources such as the Perl Archive Toolkit, the Perl package manager and the Perl Installation Program.