Home > Package management system

In such a system, the software is distributed in packages, usually encapsulated into a single file. The file, as well as the software itself, often contains information that describes the package's details, including its name, checksums, and dependencies on any other packages that it needs to work, i.e. libraries. It may also include information on how to configure the package for use and how to remove the package cleanly when it is no longer required. The package manager then uses this information to install, configure, and remove packages as requested by the user.

Some well-known examples of package management systems include:

• RPM/ YUM, Red Hat's package manager, used not only by Red Hat Linux but by several other Linux distributions.
• dpkg/ APT (used originally by Debian GNU/Linux, now ported to other systems).
• Portage/ emerge, used by Gentoo LinuxGentoo Linux is a Linux distribution. It is designed to be modular, portable and optimized for the user's machine. This is accomplished by building all tools and utilities from source code, although, for convenience, several large software packages are al and inspired by the BSD ports system.
• The " ports tree " system used by FreeBSDFreeBSD is a Unix-like operating system descended from Unix via the BSD branch through 386BSD and 4. It runs on processors compatible with the Intel x86 family, as well as on the DEC Alpha, the UltraSPARC processors by Sun Microsystems, the Itanium (IA-64, NetBSDNetBSD was the first of the freely redistributable, open-source versions of the BSD Unix-like operating systems to produce a formal release, with NetBSD 0. 8 (May 1993). NetBSD and FreeBSD are derived from the original UCB 4. 3BSD via the Networking/2 rel, OpenBSDOpenBSD is a secure, freely available, multi- platform BSD-based UNIX-like operating system. OpenBSD specialises in security and correctness. Its developers work on careful and proactive auditing of the system's code, which in turn contributes to the stab and the like.
• SlackwareSlackware is a Linux distribution. Slackware takes a different approach than other popular distributions such as Red Hat, Debian, Gentoo, SuSE, and Mandrake Linux. It might best be described as "UNIX-like", given its policy of incorporating only stable ap's tgz approach to package management, which does not handle dependencies.

Recent versions of Microsoft WindowsImage use policy. Microsoft Windows is a range of commercial operating environments for personal computers. The range was first introduced by Microsoft in 1985 and eventually has come to dominate the world personal computer market. All recent versions of provide similar facilities ( Windows UpdateInternet Explorer web browser. This is a screenshot of Windows Update version 5. Windows Update is a web-based software update service for Microsoft Windows operating systems. It offers automatic a one-stop location for downloading critical system compone) for Microsoft software.

See also: DLL hell