A bash function that will pipe the output of git log
through awk to produce a dot file.

The graph is then rendered as a pdf.

Requires graphviz.

OSX:        sudo port install graphviz
GNU/Linux:  sudo apt-get install graphviz

To install git dot:

  sudo install -v -m 0755 git-dot $(dirname $(which git))
Try it out:

  git dot --since=2010-10-01 --branches=*