git-guilt

Show total blame count

$ git guilt

$ git guilt [first_revision] [last_revision]

$ git guilt [[-e|--email]]

$ git guilt [[-w|--ignore-whitespace]]

$ git guilt 'git log --until "3 weeks ago" --format "%H" [[-n|--max-count]] 1'

$ git guilt @{3.weeks.ago}

git-guilt [options...] [path…]

-a AUTHOR, --author AUTHOR
    Stats for specific AUTHOR (name or email pattern)

-p, --percentage
    Show percentages instead of absolute line counts

-e, --email
    Match authors by email instead of name

--since REF
    Consider only commits since REF (tag/branch/commit)

--until REF
    Consider only commits before REF

-h, --help
    Display usage help

git-guilt is a witty command-line tool for Git repositories that calculates and displays the percentage (or count) of code lines authored by a specific developer, using git blame data. Designed with humor in mind, it 'guilts' programmers by revealing how much of the current codebase they own—low numbers prompt self-reflection, high ones spark pride.

It scans tracked files (or specified paths), attributes lines via blame porcelain output, and aggregates stats by author. Blank lines, comments, and generated files can be filtered. Ideal for teams to visualize contributions light-heartedly during standups or retrospectives.

Stats respect Git history, including time ranges via refs. Output includes total lines, authored lines, and percentage. It's a Ruby gem, easy to install, but runs slowly on massive repos due to per-file blames. Not for production metrics—purely fun and insightful.

git blame-based: ignores deletions, renames, binary files, and uncommitted changes. Slow on large repos. Matches authors via git config, case-sensitive by default.

Your lines: 1,247 / 12,593 (9.91%)
John Doe: 4,521 / 12,593 (35.90%)

gem install git-guilt
git clone https://github.com/jferris/git-guilt.git

Created by Jeff Ferris in 2011 as a Ruby script for fun code ownership insights. Released as gem 'git-guilt' on RubyGems. Popular in dev communities; last major updates ~2015, still widely forked on GitHub.

git-blame(1), git-shortlog(1), git-log(1)