正确删除文件的方法

$ rm readme.md #删除工作区的readme.md文件
$ git status
On branch temp
Changes not staged for commit:
  (use "git add/rm <file>..." to update what will be committed)
  (use "git checkout -- <file>..." to discard changes in working directory)

	deleted:    readme.md

no changes added to commit (use "git add" and/or "git commit -a")
$ git rm readme.md #删除暂存区的readme.md 或者使用add命令更新暂存区
$ git status
On branch temp
Changes to be committed:
  (use "git reset HEAD <file>..." to unstage)

	deleted:    readme.md

$ git reset --hard HEAD #恢复工作区和暂存区到HEAD指针
HEAD is now at 645c351 Modified commit2
$ git status
On branch temp
nothing to commit, working tree clean
$ git rm readme.md #使用rm命令删除readme.md
rm 'readme.md'
$ git status #查看状态 发现和先使用rm删除工作区文件 然后再更新暂存区的效果是一样的
On branch temp
Changes to be committed:
  (use "git reset HEAD <file>..." to unstage)

	deleted:    readme.md