Commandline tool for executing scripts on directory changes

Usage

If you have a root directory structure like this

.
subdir_A/
subdir_B/subdir_C/.onchange
subdir_B/.onchange

Then activate the react tool

cd root
react

it will monitor directories subdir_B/subdir_C and subdir_B for changes and execute the .onchange script in each directory whenever a file event eccurs.

Example .onchange

---

If working on a python module react could be used to execute tests whenever a .py file is modified.

#!/bin/sh

extension="${1##*.}"
case $extension in
    py)
        cd ~/myproject
        python setup.py test
        ;;
esac