Post Commit hook to commit an empty commit with the message and title of a repo to another repo (i.e. can be used to log all your git commits from multiple repos into one central repo location). For fun.

post-commit

#!/usr/bin/php
<?php
/**
 * .git/hooks/post-commit
 *
 * This post-commit hook is just for fun.
 * Set up your central repository then set the post-commit hook into your other repositories that you want to log
 *
 * @author  dan2k3k4  http://github.com/dan2k3k4
 * @since   April 29 2014
 *
 */

$centralRepo = "__DEFINE_YOUR_REPO_HERE";

/**
 * Get the git repo name and message
 */
$gitRepo = '';
$gitMessage = '';

exec('git rev-parse --show-toplevel', $gitRepo);
$gitRepo = basename($gitRepo[0]);

exec('git log -1 HEAD --pretty=format:%s', $gitMessage);
$gitMessage = $gitMessage[0];

exec('git --git-dir="' . $centralRepo . '.git" --work-tree="' . $centralRepo . '" commit --allow-empty -m "' . $gitRepo . ' => ' . $gitMessage . '"');

Think a D3js enabled web app that gets the git-log output from this "git log central repository" would be nice to teach myself about node-webkit and D3js if I get time...