How to change the author and committer name and e-mail of multiple commits in Git?

Question

I was writing a simple script in the school computer, and committing the changes to Git (in a repo that was in my pendrive, cloned from my computer at home). After several c

Answer 1

In the case where just the top few commits have bad authors, you can do this all inside git rebase -i using the exec command and the --amend commit, as follows:

git rebase -i HEAD~6 # as required

which presents you with the editable list of commits:

pick abcd Someone else's commit
pick defg my bad commit 1
pick 1234 my bad commit 2

Then add exec ... --author="..." lines after all lines with bad authors:

pick abcd Someone else's commit
pick defg my bad commit 1
exec git commit --amend --author="New Author Name " -C HEAD
pick 1234 my bad commit 2
exec git commit --amend --author="New Author Name " -C HEAD

save and exit editor (to run).

This solution may be longer to type than some others, but it's highly controllable - I know exactly what commits it hits.

Thanks to @asmeurer for the inspiration.