The idea of showing gnu/linux/unix command by using examples is to guide new user to have better understanding of the basic usage of a command and adapt to use it instantly. We highly recommend users to try out the command, and going through the manuals for more details usage.
A useful command usually comes with a very complex manual, and these manual sometime scares a new user away. It is because they couldn’t find a simple example just to try it out. Imagine a kid just started to learn up how to add up two numbers and been thrown a Calculus textbook. Manuals are meant for reference, examples are meant for learning.
We share the experience by examples and hope that everyone could learn it fast.
At last, we wish you all the best! :)