Preface

Linux started life as a “hobby project” of Linus Torvalds in April 1991. He was trying to create an alternative to the minix operating system that runs on Intel 386/486 AT-class machines. Linux has come a long way since its inception. Today, more than a dozen different Linux distributions such as SUSE, Red Hat, Slackware, and so on, are available and run on a variety of hardware, including big IBM irons (such as the S/390 and the zSeries systems).

For the longest time, Linux was mostly used by home users and within educational institutions due to its cost (free!). The availability of Linux kernel source code made it a very attractive operating system to be studied in computer science courses and also helped to further promote its popularity. ...

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