GitHub Primer

Clone a repo:

git clone https://github.com/username/repo.git

To see the status of files:

git status

To commit changes:

git commit

Config git for a push:

git config --global user.name "username"
git config --global user.email "username@users.noreply.github.com"

To see the config:

vi ~/.gitconfig

To undo a git push
(from http://stackoverflow.com/questions/1270514/undoing-a-git-push):

git push -f origin 67..dc:master