在if-then语句中,不管命令是否成功执行,你都只有一种选择。如果命令返回一个非0退出状态码,则bash shell会继续执行脚本中的下一条命令。在这种情况下,如果能够执行另一组命令就好了。这正是if-then-else语句的作
I\'m a bit开发者_如何学C confused about mvc terminology. Using the question title as an example, a view corresponds to an action, which means xxTemplateFile would be considered to represent the view.