Acknowledgments

I want to thank the many people who helped with past editions, helpful comments and ideas, and technical edits and both formal and informal advice. I owe a huge debt of gratitude to the Ubuntu community, Canonical, and Mark Shuttleworth for inviting me to participate in the community years ago. Finally, thanks to my colleagues at Pearson, especially Debra Williams, for the trust placed in me and the opportunity to collaborate on projects like this one.