# Create a repository with one commit git init -q printf "Hello World\nWelcome to Git\n" > index.html git add index.html git commit -q -m "First version" # Change the first line of index.html sed -i 's/Hello World/Hello Git/' index.html # Add a new file, style.css, and stage it echo "h1 { color: blue; }" > style.css git add style.css git diff HEAD --stat