书中介绍了linux_shell编程技术，层层渐进，适合对linux有一定了解的初学者(Linux_shell programming technology are introduced in the book, layers of progressive, for a better understanding of Linux beginners)

一本关于linux下的数据库基础书，是学习SQL编程的好书，值得一看(A database on the basis of Linux books, SQL programming is learning a good book, worth a visit)