git diff 的用法

• git diff 对比两个文件修改的记录

• 不带参数的调用

    git diff filename
    这种是比较 工作区和暂存区

• 比较暂存区与最新本地版本库

    git diff --cached  filename

• 比较工作区和最新版本

    git diff HEAD filename

• 比较工作区与指定的 commit -id 的差异

    git diff commit-id  filename

• 比较暂存区与指定 commit-id 的差异

    git diff --cached commit-id  filename

• 比较两个 commit -id 的差异

    git diff commit-id commit-id

• 参考

    https://www.cnblogs.com/qianqiannian/p/6010219.html