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yum Package Manager - Yellowdog Updater, Modified
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yum Package Manager - Yellowdog Updater, Modified

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Snippet from Wikipedia: Yum (software): The Yellowdog Updater Modified (YUM) is a free and open-source command-line package-management utility for computers running the Linux operating system using the RPM Package Manager. Though YUM has a command-line interface, several other tools provide graphical user interfaces to YUM functionality.
YUM allows for automatic updates and package and dependency management on RPM-based distributions. Like the Advanced Package Tool (APT) from Debian, YUM works with software repositories (collections of packages), which can be accessed locally or over a network connection.
Under the hood, YUM depends on RPM, which is a packaging standard for digital distribution of software, which automatically uses hashes and digital signatures to verify the authorship and integrity of said software; unlike some app stores, which serve a similar function, neither YUM nor RPM provide built-in support for proprietary restrictions on copying of packages by end-users. YUM is implemented as libraries in the Python programming language, with a small set of programs that provide a command-line interface. GUI-based wrappers such as YUM Extender (yumex) also exist, and has been adopted for Fedora Linux until version 22.
A rewrite of YUM named DNF replaced YUM as the default package manager in Fedora 22 (in 2015). This was required due to Fedora's transition from Python 2 to Python 3, which is not supported by YUM. DNF also improves on YUM in several ways - improved performance, better resolution of dependency conflicts, and easier integration with other software applications. From RHEL 8, yum is an alias for DNF.

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Snippet from Wikipedia: DNF (software): DNF (abbreviation for Dandified YUM) is a package manager for Red Hat-based Linux distributions and derivatives. DNF was introduced in Fedora 18 in 2013 as a replacement for yum; it has been the default package manager since Fedora 22 in 2015 and Red Hat Enterprise Linux 8 and is also an alternative package manager for Mageia. DNF performs package management tasks on top of RPM, and supporting libraries.

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