git
Signed Git commits set up in minutes: the modern SSH key method for git 2.34+, from gpg.format ssh config through adding your key on GitHub, so your commits get the Verified badge. Commands included for Mac and Linux.
git
Committed an .env file with secrets to Git? Three steps remove it from history forever: add it to .gitignore, rewrite every commit with git filter-branch, then git push --force the cleaned history. Exact commands included, plus what the rewrite does to your repository.
ruby
Enforce consistent commit messages with a small Ruby script and Lefthook: a commit-msg hook that reads .git/COMMIT_EDITMSG, validates prefixes like feat, fix, or docs against a regex, and rejects bad messages before they land. Full script and Lefthook config included.