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When diving into the realm of Linux, one of the fundamental skills to master is package management. Linux distributions rely on package managers to install, update, remove, and manage software. This blog focuses on YUM and DNF, predominantly used in Red Hat Enterprise Linux (RHEL) and its derivatives like CentOS and Fedora. Additionally, we'll touch on APT and Zypper, used in Debian-based systems and SUSE Linux distributions, respectively. YUM (Yellowdog Updater Modified) is an open-source command-line package-management utility for computers running Linux using the RPM Package Manager. Although YUM has been a reliable tool for RHEL and CentOS for many years, it is being gradually replaced by DNF.