Using GIT to Manage Config Files:-

A good use of GIT is to manage the configuration files in a GNU/Linux system.

1) create a git repository in /etc
cd /etc ; git init
2)
git add .
git commit -am "Initial commit. /etc now under version control"

3) From now on every time you modify a file you can do

git add
git commit -m "Description of the change to "

4) To see your pending changes do: git status

5)if some files are to be removed, run git add -u .