Roderick Smith, Linux Power Tools (Repost)

Linux, a robust UNIX-like open source operating system, is reportedly installed on over 20 million computers. While Red Hat is by far the most popular version of Linux, there are several other major distributions: Debian, Mandrake, Slackware, and UnitedLinux–the merging of Caldera/SCO, Connectiva, SuSE, and TurboLinux.