"Stephen says that the most noticeable changes in the latest Linux in a Nutshell are the git and virtualization chapters. He says, "The git chapter was written by Avery Pennarun, who we think did a great job matching the style of the other chapters." He adds, "The virtualization chapter offers an overview of setting up a server for running multiple virtualized systems – KVM and Xen are covered here, as well as the libvirt command-line tools used to control them."
"Because the server is so widely adopted, Stephen says that the book authors also decided to cover VMware's ESC server. He says, "ESX has a Linux-based console. While most of the time you will use a GUI to manage your ESX servers, the console offers useful commands for analyzing and manipulating virtual guests."