使用nc传输数据

参考http://blog.csdn.net/slvher/article/details/9668749
http://blog.csdn.net/caoshuming_500/article/details/23755713

发送端

nc 3.1.5.7 9999 < demo.txt

接收端(3.1.5.7)

nc -l  9999 >demo.txt