Update all your GitHub repos automatically. Could work for anything you wish (Bitbucket repos, Drupal repos...)

automatic-git-pull

#!/bin/bash

REPO_PATH="/path/to/github/repos"
GITHUB="repo1 repo2 repo3"

echo "Updating GitHub repos..."

for REPO in ${GITHUB} ; do
  cd ${REPO_PATH}/${REPO}/
  echo -e "\tPulling ${REPO} repo..."
  git pull -q
done

echo "Finished updating all GitHub repos!"