如何使用git的撤消操作呢？

git revert撤销某次操作，此次操作之前的commit都会被保留。

因此revert 只會使commit继续往前,优点是可以针对某個 commit 進行还原 并且留下还原记录

git revert -n <commit id>     #撤销某次操作，commit id为提交号
git revert -n HEAD~<number>   #撤销某个版本，number为向前数的版本号。 

git reset 是撤销某次提交，但是此次之后的修改都会被退回到暂存区。

1.撤销到某一个提交号的版本。

git revert -n 08a94d26db3e7678d615625eb6c839729a21ac3f
ksnowlv@ksnowlvdeMacBook-Pro~/Music/gittest$git status
On branch master
You are currently reverting commit 08a94d2.
  (all conflicts fixed: run "git revert --continue")
  (use "git revert --abort" to cancel the revert operation)

Changes to be committed:
  (use "git reset HEAD <file>..." to unstage)

deleted:    1.txt

ksnowlv@ksnowlvdeMacBook-Pro~/Music/gittest$

2.撤销到某个版本。

ksnowlv@ksnowlvdeMacBook-Pro~/Music/gittest$git revert -n HEAD~2
ksnowlv@ksnowlvdeMacBook-Pro~/Music/gittest$ls
a     a.txt
ksnowlv@ksnowlvdeMacBook-Pro~/Music/gittest$git status
On branch master
You are currently reverting commit d5527c7.
  (all conflicts fixed: run "git revert --continue")
  (use "git revert --abort" to cancel the revert operation)

Changes to be committed:
  (use "git reset HEAD <file>..." to unstage)

deleted:    1.txt
new file:   a.txt
new file:   a/a.txt

ksnowlv@ksnowlvdeMacBook-Pro~/Music/gittest$