Use Git hooks to automatically push after every commit

A Git hook is a shell script that is invoked at specific points during some Git operations. They are documented in the Git book.

The hook we are interested in is post-commit (documented here). It gets run after a new commit is made. This is exactly when we want to try and update our remote.

Our hook will:

• Execute each time you commit something into your repository.
• Avoid doing anything if the commit is made during a rebase or merge.
• Push to a remote named origin (or whichever one you change the UPSTREAM shell variable to point).
• Create or update a remote reference that matches the branch name that’s currently checked out.

Copy and paste the following script into a file named .git/hooks/post-commit in your repository directory.