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libjpeg is a free library with functions for handling the JPEG image data format. It implements a JPEG codec (encoding and decoding) alongside various utilities for handling JPEG data. It is written in C and distributed as free software together with its source code under the terms of a custom permissive ( BSD -like) free software license ...
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 .
A library called libpackagekit allows other programs to interact with PackageKit. [7] Features include: installing local files, ServicePack media and packages from remote sources; authorization using Polkit; the use of existing packaging tools; multi-user system awareness – it will not allow shutdown in critical parts of the transaction
Debian Unstable, known as "Sid", contains all the latest packages as soon as they are available, and follows a rolling-release model. [6]Once a package has been in Debian Unstable for 2–10 days (depending on the urgency of the upload), doesn't introduce critical bugs and doesn't break other packages (among other conditions), it is included in Debian Testing, also known as "next-stable".
dpkg-source packs and unpacks the source files of a Debian package. dpkg-gencontrol reads the information from an unpacked Debian tree source and generates a binary package control package, creating an entry for this in Debian/files. dpkg-shlibdeps calculates the dependencies of runs with respect to libraries.
update is used to resynchronize the package index files from their sources. The lists of available packages are fetched from the location(s) specified in /etc/apt/sources.list. For example, when using a Debian archive, this command retrieves and scans the Packages.gz files, so that information about new and updated packages is available.
OpenJPEG is an open-source library to encode and decode JPEG 2000 images. As of version 2.1 released in April 2014, it is officially conformant with the JPEG 2000 Part-1 standard. [ 3 ] It was subsequently adopted by ImageMagick instead of JasPer in 6.8.8-2 [ 4 ] and approved as new reference software for this standard in July 2015. [ 5 ]
YUM allows for automatic updates and package and dependency management on RPM-based distributions. [5] Like the Advanced Package Tool (APT) from Debian, YUM works with software repositories (collections of packages), which can be accessed locally [6] or over a network connection.