说明：  linux高级程序设计电子书。这个电子书的中文版不是很完整，这个是这本书的英文完整版。虽然是英文版的但是不是很难，一共才三百八十多页。看完这本书再看apue会简单的多。
(linux advanced programming books. Chinese version of the book e-book is not complete, this is the full version in English. Although it is English version but the content is not difficult, only a total of over three hundred and eighty pages. After reading this book, you will find understanding apue is much easier.)