1、提交

git commit -m "注释" 文件名

2、查看提交日志

3、回退到某个版本

git reset --hard [索引值]

git reset --hard HEAD~3    -----后退三步

4、删除文件并且找回

1、本地库执行rm命令

rm aaa.txt

2、提交命令

git commit -m "delete aaa.txt" aaa.txt

3、查看log

$ git reflog

7864c76 (HEAD -> master) HEAD@{0}: commit: delete aaa.txt

6db43a7 HEAD@{1}: commit: new add aaa.txt

71663c9 HEAD@{2}: reset: moving to 71663c9

c92fe1c HEAD@{3}: reset: moving to c92fe1c

09db94e HEAD@{4}: reset: moving to 09db94e

c92fe1c HEAD@{5}: commit: four

71663c9 HEAD@{6}: commit: three

09db94e HEAD@{7}: commit: my second commit

85982fe HEAD@{8}: commit (initial): my first commit new file ggod.txt

4、回退版本

$ git reset --hard 6db43a7

HEAD is now at 6db43a7 new add aaa.txt

5、分支

1、查看分支命令

$ git branch -v

* master 6db43a7 new add aaa.txt

2、创建分支

$ git branch dev20200209

3、切换分支

$ git checkout dev20200209

Switched to branch 'dev20200209'

4、合并分支

1、切换到要合并到的分支

$ git checkout master

2、执行merge命令

$ git merge dev20200209

Already up to date.