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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.
Apart from creating, manipulating, loading, and installing binary PAR archives, the PAR module can be used to create standalone executables from complex applications using its PAR::Packer extension. Like many other Perl modules, PAR is primarily distributed via the CPAN where numerous extensions have been published. These include:
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.
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.
On October 26, 1995, the Comprehensive Perl Archive Network (CPAN) was established as a repository for the Perl language and Perl modules; as of December 2022, it carries over 211,850 modules in 43,865 distributions, written by more than 14,324 authors, and is mirrored worldwide at more than 245 locations. [41]
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.