Once a little known productivity boost for personal computers Linux is now a central part of computing environments everywhere. This operating system now turns up in corporate hubs, web servers, academic research platforms, and program development systems. After six years, now entering into its fourth edition, this classic is still recommended by knowledgeable Linux users more than any other guide. Everything you need to understand, install, and start using the Linux operating system is explained. Running Linux has been refocused to delve deeper into installation, configuring the windowing system, system administration, and networking. New topics covering laptops, cameras and scanners, sound and multimedia, ADSL, the GNOME desktop, MySQL, PHP, and configuring an NFS server have been added.