gistfile1.txt

#!/usr/bin/env bash
# update the local repositories if needed
if [ $REPOSITORIES ]; then
    echo "Updating local repositories"
    for REPOSITORY in `ls ${REPOSITORIES}`; do
        echo "${REPOSITORY}: "
        ( cd ${REPOSITORIES}/$REPOSITORY; git clean -fdx; git pull; git reset --hard HEAD )
    done
    echo "Done updating `ls ${REPOSITORIES} | wc -l` local repositories"
else
    echo 'You need to specify the $REPOSITORIES environment-variable.'
    exit 1
fi