Introduction
When working with Red Hat-based Linux distributions like CentOS or RHEL, the "sudo: yum: command not found" error can prevent you from installing software packages or updating your system. This error typically occurs when the YUM package manager is missing, misconfigured, or corrupted.

In this practical lab, you'll learn how to diagnose and resolve this common issue through hands-on exercises in a CentOS environment. You'll use Docker to create a CentOS container where you can safely experiment with package management, troubleshoot YUM-related problems, and apply best practices for system maintenance.
This Lab requires an internet connection for learning, thus only Pro users can start the VM. Upgrade your account to Pro.