Tracking an /etc directory using GIT version control while preserving file permissions

.. while preserving permissions on the linux file system.

Here's how to do it:
1. Download the post hook file setgitperms from here or directly from here http://repo.or.cz/w/git.git/blob_plain/HEAD:/contrib/hooks/setgitperms.perl

2. Place the script inside your .git/hooks directory. You have two options here:

(Option A) To apply this for all git repositories newly created
Copy the file setgitperms.perl inside the directory:

mv setgitperms.perl /usr/share/git-core/templates/hooks/.

(Option B) To apply this hook for a specific directory only
Copy the file setgitperms.perl inside the directory:
mv setgitperms.perl <Your Project Directory>/.git/hooks/.

3. Although git new releases handles this, just to be safe, make sure to add execute permissions for the hook:
chmod +x setgitperms.perl

4. Inside the hooks directory, create a file named "pre-commit" and place in it the following lines:

#!/bin/sh

SUBDIRECTORY_OK=1 . git-sh-setup

$GIT_DIR/hooks/setgitperms.perl -r

5. Create file named post-merge and post-checkout and place the following content inside each:

#!/bin/sh

SUBDIRECTORY_OK=1 . git-sh-setup

$GIT_DIR/hooks/setgitperms.perl -w

6. Save the files and make sure they are executable using chmod +x:
chmod +x post-merge
chmod +x post-checkout
chmod +x pre-commit

7. Thats it.

Reference: http://serverfault.com/questions/5410/using-revision-control-for-server-configuration-files