很全套的object-c，iphone，mac编程的事例，从object-c基础，到精通，再转向iphone平台的xcode编程，给出了一路引导深入的Demo。源程序需要改一下iphone程序员的identity标示，这个你懂得。-It is full of object-c, iphone, mac programming examples, from the object-c basis, to the master, and then turned to the xcode iphone

修改ip地址和dns,只是测试用的 想写一个工具，盗用ip mac的-change ip address and dns

使用objective-c语言实现的一个可以在IOS和mac系统下运行的状态机。改状态机是异步状态机。-Using objective-c language can achieve a system in IOS and mac running state machine. Change state machine is an asynchronous state machine.

mac电脑上编程实现监听某个文件夹目录下文件的增加删除修改等变化。-listen files change.