Project with examples to teach about Git - FJ-87 Caelum Course

To check what's changed since last commit

$ git status

If you add the file in staged area, you can not see the modifications using git diff. You need to use the follow:

$ git diff --staged

You can unstage the file. HEAD refer to last commit

$ git reset HEAD filename

Undo last commit, put changes into staging. This command moves the commit before HEAD

$ git reset --soft HEAD^

Changing the last commit. This message will override the previous commit message

$ git commit --amend -m "New commit message"

Changing the last commit without change the message

$ git commit --amend --no-edit

Adding changes from all tracked files

$ git commit -a -m "New commit message"

If all that commit are wrong, you can reset the changes into staged area and then checkout all your modifications. Undo last commit and all changes.

$ git reset --hard HEAD^

You can undo the last 2 commit and all changes

$ git reset --hard HEAD^^