标签：git diff
git diff 比较工作区和缓存区之间的差异
git diff HEAD 比较工作区和版本库差异
git diff master 同上
git diff --cached 比较缓存区和版本库差异
git diff --cached HEAD 同上
git diff
原文地址：http://9425336.blog.51cto.com/9415336/1558015
