Because I never seem to remember them
Global git ignore
echo ".DS_Store" >> ~/.gitignore
git config --global core.excludesfile ~/.gitignore
My info
git config --global user.name "Your Name Comes Here"
git config --global user.email you@yourdomain.example.com
Colorized outputs
git config --global color.branch auto
git config --global color.diff auto
git config --global color.interactive auto
git config --global color.status auto