unix哲学
Write programs that do one thing and do it well.
做一件事，并且做好。
Write programs to work together.
相互合作，一起工作。
Write programs to handle text streams, because that is a universal interface.
处理文本流，因为它通用。
Rule of Modularity: Write simple parts connected by clean interfaces.
写简单的接口，简单的模块。
Rule of Clarity: Clarity is better than cleverness.
清晰比聪明好。
Rule of Composition: Design programs to be connected to other programs.
考虑复用。
Small is beautiful.
简单即优美。