Script to help split a project into sub-modules

splitGitDirs.sh

#!/bin/bash

set -ex

ROOT_DIR=$(cd $(dirname $1); pwd)/$(basename $1)
START_DIR=$(pwd)

[[ -d ${START_DIR}/splits ]] || mkdir ${START_DIR}/splits

for subProject in $(find $ROOT_DIR -mindepth 1 -maxdepth 1 -type d | grep -v git); do
  cd $ROOT_DIR
  dest_dir=${START_DIR}/splits/$(basename $subProject)
  cp -r ${ROOT_DIR} $dest_dir
  cd $dest_dir
  git filter-branch --subdirectory-filter $(basename $subProject)/ -- master 
done