This is a document that covers some issues regarding shell script programming. Note that this page is still under construction. The intension is that is should be possible to use it as a WWW text for "advanced" shell programming, but right now I am just collecting stuff.
This tutorial assumes no previous knowledge of scripting or programming, but progresses rapidly toward an intermediate/advanced level of instruction . . . all the while sneaking in little nuggets of UNIX® wisdom and lore. It serves as a textbook, a manual for self-study, and a reference and source of knowledge on shell scripting techniques. The exercises and heavily-commented examples invite active reader participation, under the premise that the only way to really learn scripting is to write scripts. 高阶编程
适合初学者的简单的shell 编程 tutorial