Acknowledgments Introduction A Brief History of Hackerdom Twenty Years of Berkeley Unix:From AT&T-Owned to Freely Redistributable The Internet Engineering Task Force The GNU Operation System and the Free Software Movement Future of Cygnus Solutions:An Entrepreneur's Account Software Engineering The Linux Edge Giving It Away:How Red Hat Software Stumbled Across a New Economic Model and Helped Improve an Industry Diligence,Patience,and Humility Open Source as a Business Strategy The Open Source Definition Hardware,Software,and Infoware Freeing the Source:The Story of Mozilla The Revenge of the Hackers Appendix A:The Tanenbaum-Torvalds Debate Appendix B:The Open Source Definition,Version 1.0 Contributors