Linux Device Drivers: The basic "Hello World" Linux Device Driver

Now what kind of programmer/Linux user would I be if I didn't at least touch on the topic of device drivers for Linux. Any old school Linux programmer/admin/user has at one point in time had to fight the driver wars, in which the thought of writing your own driver seems like a better idea than trying to use whats out there. Yes, there were a few Linux programming ninjas that had that thought and the end result is a very long list of devices that is supported by the Linux operating system because of this effort. Well, for those of you longing for the days of old or just have too much time on your hands, here is a quick little tutorial on how to write the most basic of device drivers the "Hello world" driver. Yes, even code ninjas need to start somewhere. (Thanks to Digg for the link)