notebook/IT/Git/Rewrite_History.md

# Rewrite Git History

## Changing the Last Commit

If you want to modify your last commit message:

`git commit --amend`

## Rewrite multiple Commit

for that you need to use rebase in interactive mode like this:

` git rebase -i HEAD^3 `

this will open an editor wit list of commit you need to modiy this with needed action to do

### Reordering Commit

ON this editor you can invert line to change commit order, git will reaply commit in wew order

### Squash & fixup commit

**Squash** option will merge will merge xommit with the previous and ad commit message in the new commit message

**Fixup** do same thing put forgot commit message

### Splitting a Commit

you can do that with **edit** command

git rebase will stop after apply commit where you hae put edit

ad this moment you can process to a Head reset and commit when you want to add commit modification like ewample below

```sh
git reset HEAD^
git add README
git commit -m 'Update README formatting'
git add lib/simplegit.rb
git commit -m 'Add blame'
git rebase --continue
```

### delete

**drop** will delete comite rebase will not apply modification during processing
to use by example if you have done a modifcation and a revert