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A Practical Guide to Linux® Commands, Editors, and Shell Programming by Mark G. Sobell

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Chapter 1. Welcome to Linux

The Linux kernel was developed by Finnish undergraduate student Linus Torvalds, who used the Internet to make the source code immediately available to others for free. Torvalds released Linux version 0.01 in September 1991.

The new operating system came together through a lot of hard work. Programmers around the world were quick to extend the kernel and develop other tools, adding functionality to match that already found in both BSD UNIX and System V UNIX (SVR4) as well as new functionality.

The Linux operating system, developed through the cooperation of many, many people ...

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