运维人

Bash Magic

参考资料: http://www.cnblogs.com/wangbin/archive/2011/10/11/2207179.html http://www.programgo.com/article/84763718594/ 1.变量定义 # var无定义时取值hello [dong@idc1-server1 ~]$ echo ${var} [dong@idc1-server1 ~]$ ech […]