• If you have multiple Rails versions installed on your application and if you want to create Rails application using below command

rails demo_apps

• In this case, it will create Rails application "apps" with latest version installed on our machine.

• If you want to create Rails application for specific rails versions, use below command

rails _x.x.x_ <appname>

example of

rails _2.2.2_ demo_apps

• Please make sure there is a space after rails.
• A new app has been created with the 2.2.2 codebase

Posted on February 03, 2014 by Amit Pandya in Rails