Thursday, October 22, 2015

Package management system

In software, a package management system, also called package manager, is a collection of software tools to automate the process of installing, upgrading, configuring, and removing software packages for a computer‘s operating system in a consistent manner. It typically maintains a database of software dependencies and version information to prevent software mismatches and missing prerequisites.

Packages are distributions of software, applications and data. Packages also contain meta data, such as the software’s name, description of its purpose, version number, vendor, checksum, and a list of  dependencies
 necessary for the software to run properly. Upon installation, meta data is stored in a local package database.
Package management systems are designed to save organizations time and money through remote administration and software distribution technology that eliminate the need for manual installs and updates. This can be particularly useful for large enterprises whose operating systems are based on Linux and other Unix-like systems, typically consisting of hundreds or even thousands of distinct software packages; in the former case, a package management system is a convenience, in the latter case it becomes essential.

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