Shell作为Unix系操作系统当中最有魅力且不可或缺的组件，经过数十载的洗礼不

仅没有被淘汰，而且愈加变得成熟稳健，究其原因，大概因为它是个非常稳固的

粘合剂，能够把大量功能强大的组件任意配搭，总能很好很快地完成用户的任务。

本文的一些命令很可能看起来是"雕虫小技"，我们只好仰慕一下Shell大牛了，

但是有些细节我会稍加发掘加以说明，遇到有趣的地方希望能博您一笑了。-Shell Unix system as the most attractive operating system and essential components, after decades of baptism is not only not be eliminated, and even more mature sound, reason, probably because it is a very strong adhesive, able to a large number of components of any combination of powerful, always good to quickly complete the user' s tasks. Some of this command may appear to be " fluff" , we have to admire about Shell large cattle, but some details I will elaborate a little exploring, experiencing interesting Bo You want to laugh.