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dpkg is the software at the base of the package management system in the free operating system Debian and its numerous derivatives. dpkg is used to install, remove, and provide information about .deb packages. dpkg (Debian Package) itself is a low-level tool.
When packages are being installed, debconf asks the user questions which determine the contents of the system-wide configuration files associated with that package. After package installation, it is possible to go back and change the configuration of a package by using the dpkg-reconfigure program, or another program such as Synaptic.
dpkg: Originally used by Debian and now by Ubuntu. Uses the .deb format and was the first to have a widely known dependency resolution tool, APT. The ncurses-based front-end for APT, aptitude, is also a popular package manager for Debian-based systems; Entropy: Used by and created for Sabayon Linux.
Diagram showing an example file structure of a .deb file Frhed hex editor displaying the raw data of a Debian package. Prior to Debian 0.93, a package consisted of a file header and two concatenated gzip archives. [6] Since Debian 0.93, a deb package is implemented as an ar archive. [7] This archive contains three files in a specific order: [8] [9]
Advanced Package Tool (APT) is a free-software user interface that works with core libraries to handle the installation and removal of software on Debian and Debian-based Linux distributions. [4] APT simplifies the process of managing software on Unix-like computer systems by automating the retrieval, configuration and installation of software ...
The debian.tar file, which contains changes to the upstream source made by the package maintainer. This includes the entire debian directory. Any modified files outside it are aggregated into patch files inside the debian/patches directory, that are automatically applied before building. The dsc file, which is a text file with metadata, such as ...
aptitude is a front end to APT, the Debian package manager. [4] It displays a list of software packages and allows the user to interactively pick packages to install or remove. It has a search system utilizing flexible search patterns. It was initially created for Debian, but has appeared in RPM-based distributions as well.
Synaptic is a GTK-based graphical user interface designed for the APT package manager used by the Debian Linux distribution and its derivatives. [2] Synaptic is usually used on systems based on deb packages but can also be used on systems based on RPM packages. It can be used to install, remove and upgrade software packages and to add repositories.