Linux Shell编程Tips

vi中替换命令
http://hi.baidu.com/xtchl/blog/item/45892c6dd88a37f643169482.html

http://dolphin-ygj.iteye.com/blog/366314

Linux shell 数组有关的一些知识
http://my.oschina.net/willSoft/blog/39812

Linux shell 字符串操作（长度，查找，替换）详解
http://www.cnblogs.com/chengmo/archive/2010/10/02/1841355.html

shell编程控制结构：expr、let、for、while、until、shift、if、case、break、continue、函数、select 
http://blog.csdn.net/fansongy/article/details/6724228