# git guilt > Show total blame count for files with unstaged changes or calculate the change in blame between two revisions. > Part of `git-extras`. > More information: . - Show total blame count: `git guilt` - Calculate the change in blame between two revisions: `git guilt {{first_revision}} {{last_revision}}` - Show author emails instead of names: `git guilt --email` - Ignore whitespace only changes when attributing blame: `git guilt --ignore-whitespace` - Find blame delta over the last three weeks: `git guilt 'git log --until="3 weeks ago" --format="%H" -n 1'` - Find blame delta over the last three weeks (git 1.8.5+): `git guilt @{3.weeks.ago}`