Git remove file from commit

Question

I am using Git and I have committed few files using

git commit -a

Later, I found that a file had mistakenly been added to the commit.

How can I remove a file from the last commit?

Answer 1

Moving the mistakenly committed files back to the staging area from the previous commit, without canceling the changes done to them. This can be done by using

 git reset --soft HEAD^ 

or

git reset --soft HEAD~1

To leave that unwanted file just reset it using

git reset HEAD path/to/unwanted_file

Now you can commit those files

git commit -c ORIG-HEAD

Note: you can give the same commit message also.