临时

http://mooc.guokr.com/note/9091/

http://blog.sina.com.cn/s/blog_69b59e3b0101lu12.html  centos

http://www.ibm.com/developerworks/cn/linux/l-cn-hardandsymb-links/  softlink hardlink

http://www.cnblogs.com/c-cloud/p/3224788.html kmp

http://www.cnblogs.com/remlostime/archive/2011/04/10/2011914.html 

http://blog.csdn.net/AllenLSY/article/details/5004360 二分图

http://www.ibm.com/developerworks/cn/linux/l-cn-gpb/ protobuf

http://www.cnblogs.com/coser/archive/2011/11/27/2265134.html 一致性hash