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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-shlibdeps calculates the dependencies of runs with respect to libraries. dpkg-genchanges reads the information from an unpacked Debian tree source that once constructed creates a control file (.changes). dpkg-buildpackage is a control script that can be used to construct the package automatically. dpkg-distaddfile adds a file input to ...
A source package is created using the dpkg-buildpackage tool or its wrapper debuild. When invoked to create a source package, dpkg-buildpackage calls the maintainer's rules to clean the source tree of any intermediate files, does various sanity checks, and finally, signs the dsc file with the packager's key using the debsign utility.
PC-BSD: Up to and including version 8.2 [5] uses files with the .pbi (Push Button Installer) filename extension which, when double-clicked, bring up an installation wizard program. Each PBI is self-contained and uses de-duplicated private dependencies to avoid version conflicts.
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]
Some package managers, such as Debian's dpkg, allow configuration during installation. In other situations, it is desirable to install packages with the default configuration and then overwrite this configuration, for instance, in headless installations to a large number of computers. This kind of pre-configured installation is also supported ...
Notably, APT automatically gets and installs packages upon which the indicated package depends (if necessary). This was an original distinguishing characteristic of APT-based package management systems, as it avoided installation failure due to missing dependencies, a type of dependency hell.
GDebi can install a local .deb file via the command line like the dpkg command, but with access to repositories to resolve dependencies. [123] Other graphical front-ends for APT include Software Center , [ 124 ] Synaptic [ 125 ] and Apper .