www.soundtraining.net/linux-server-training-101 In this Linux server training video, author and speaker Don R. Crawley demonstrates how to use yum groups to simplify package installation using yum groupinfo, yum groupinstall, and yum groupremove commands. Using CentOS 6.5 for the demonstration, you'll learn how yum groups work to prepare a Linux server for any one of the many different server roles.