Since the misty days of yore, the first step in learning a new programming language has been writing a program that prints "Hello, world!". In this article, we will use the same approach to learn how to write simple Linux kernel modules and device drivers. We will learn how to print "Hello, world!" from a kernel module three different ways: printk(), a /proc file, and a device in /dev.

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Created by bluecheese 16 years 41 weeks ago
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