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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. [1] [2]
Modules can even be used to alter the syntax of the language. The effect of Perl modules are usually limited to the current scope in which it was loaded. It is common for Perl modules to have embedded documentation in Perl's Plain Old Documentation format. POD imposes little structure on the author.
Perl control structures; Perl modules - modular extensions of the Perl language. The following modules (and module groups) and many more, including support for them (manuals, etc.) can be found on CPAN.org, using its search box: Webpage-related modules – for creating, serving, fetching, and parsing web pages CGI.pm; Library for WWW in Perl ...
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.
The Perl Object Environment (POE) is a library of Perl modules written in the Perl programming language by Rocco Caputo et al. . From CPAN: "POE originally was developed as the core of a persistent object server and runtime environment.
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.
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: