DNF is a software package manager that installs, updates, and removes packages on RPM-based Linux distributions. It automatically computes dependencies and determines the actions required to install packages. DNF also makes it easier to maintain groups of machines, eliminating the need to manually update each one using rpm.
DNF (or Dandified Yum) is the next generation version of Yum. It roughly maintains CLI compatibility with Yum and defines a strict API for extensions and plugins. Plugins can modify or extend features of DNF or provide additional CLI commands on top of those mentioned below. If you know the name of such a command (including commands mentioned bellow), you may find/install the package which provides it using the appropriate virtual provide in the form of dnf-command(<alias>) where <alias> is the name of the command; e.g. dnf-command(repoquery) for a repoquery command (the same applies to specifying dependencies of packages that require a particular command).
2.0.024 Dec 2016 19:11
DNF-2.0 has been released! The next major version release of DNF brings many user experience improvements such as better dependency problem reporting messages, weak dependencies shown in transaction summary, more intuitive help usage invoking and others. Repoquery plugin has been moved into DNF itself. Whole DNF stack release fixes over 60 bugs. DNF-2.0 release is focused on improving yum compatibility i.e. treat yum configuration options the same (`include`, `includepkgs` and `exclude`). Unfortunately this release is not fully compatible with DNF-1. See the list of DNF-1 and DNF-2 incompatible changes. Authors of dnf plugins will need to check compatibility of their plugins with the new DNF argument parser.