DNF (software)

DNF or Dandified YUM[2][3][4] is the next-generation version of the Yellowdog Updater, Modified (yum), a package manager for .rpm-based distributions. DNF was introduced in Fedora 18 in 2013,[5] it has been the default package manager since Fedora 22 in 2015[6] and Red Hat Enterprise Linux 8.[7]

Dandified Yum
DNF running on Fedora 26 (in a terminal with Solarized color scheme)
Developer(s)Red Hat
Stable release
4.4.2 / 9 November 2020 (2020-11-09)[1]
Repository
Written inC, C++, Python
Operating systemLinux
PlatformRPM
Available inEnglish
TypePackage management system
LicenseGPLv2
Websiterpm-software-management.github.io

Perceived deficiencies of yum (which DNF is intended to address) include poor performance, high memory usage, and the slowness of its iterative dependency resolution.[8] DNF uses libsolv, an external dependency resolver.[8]

DNF performs package management tasks on top of RPM, and supporting libraries.

DNF was originally written in Python, but as of 2016 efforts are under way to port it to C and move most functionality from Python code into the new libdnf library.[9] libdnf is already used by PackageKit, a Linux distribution-agnostic package system abstraction library, even though the library does not have most of DNF's features.[10]

Adoption

DNF has been the default package manager for Fedora since version 22, which was released in May 2015.[6] The libdnf library is used as a package backend in PackageKit.[10] DNF has also been available as an alternate package manager for Mageia Linux since version 6. It may become the default sometime in the future.[11]

Dependencies

libdnf
  • high-level API for DNF and underlying libraries
  • C, C++, LGPLv2+

libsolv
  • a free package dependency solver using a satisfiability algorithm
  • for solving packages and reading repositories
  • C, New BSD License

librepo
  • a library providing C and Python (libcURL like) API for downloading Linux repository metadata and packages
  • C, LGPLv2+

libcomps
  • libcomps is an alternative for yum.comps library. It is written in pure C as a library, and there are bindings for Python.
  • C, GPLv2+

References
  1. "Releases · rpm-software-management/dnf · GitHub". GitHub DNF Repository. 2020-11-09. Retrieved 2020-11-12.
  2. "DNF". Fedora Project Wiki. Retrieved 2018-05-21.
  3. "What does DNF stand for". DNF User's FAQ. Retrieved 2018-05-21.
  4. "README.rst · rpm-software-management/dnf · GitHub". GitHub DNF Repository, commit 8174427421b995265c6297ebd64024ded099ecf0. Retrieved 2018-05-21.
  5. Byfield, Bruce. "Will DNF Replace Yum?". Linux Magazine. Retrieved 2015-05-28.
  6. Andrew (2015-05-26). "Fedora 22 Released, See What`s New [Workstation]". WebUpd8. Retrieved 2015-05-28.
  7. Scott Matteson (2019-03-30). "What's new with Red Hat Enterprise Linux 8 and Red Hat Virtualization". TechRepublic. Retrieved 2019-09-24.
  8. Edge, Jake (2014-01-15). "DNF and Yum in Fedora". LWN.net. Retrieved 2015-03-29.
  9. Šilhan, Jan (2016-02-24). "DNF into C initiative started". DNF blog. Archived from the original on 2017-07-02. Retrieved 2017-07-05.
  10. Aleksandersen, Daniel (2017-07-05). "Use DNF rather than PackageKit on Fedora". Ctrl blog. Retrieved 2017-08-07.
  11. Larabel, Michael (2016-09-05). "Mageia To Offer DNF, But Will Keep Using URPMI By Default". Phoronix. Retrieved 2017-12-04.
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