If you can take the time, setup "etckeeper". If not, here's a quick and dirty recipe to track changes in the "/etc"e; tree on the local host:

cd /tmp && git clone http://git.cs.uwaterloo.ca//CSCF/host-configs/template

mv template/.git* /etc && cd /etc

git add -A

# check if you want to see that there is now a lot of new files to be uploaded.
git status

git commit -m "State of /etc tree at time of initial git monitoring of it"