不同平台windows、linux、mac 上换行符的问题

http://blog.chinaunix.net/uid-26748613-id-3179595.html?page=2

https://blog.csdn.net/changruihe/article/details/53287313

http://www.cnblogs.com/hwli/p/9638871.html

https://blog.csdn.net/Jackie_Ryan/article/details/79857890