How to auto-reload files in Node.js?

A good, up to date alternative to supervisor is nodemon:

Monitor for any changes in your node.js application and automatically restart the server - perfect for development

To use nodemon:

$ npm install nodemon -g
$ nodemon app.js

node-supervisor is awesome

usage to restart on save:

npm install supervisor -g
supervisor app.js

by isaacs - http://github.com/isaacs/node-supervisor

i found a simple way:

delete require.cache['/home/shimin/test2.js']