# Important Ruby Settings [edit]

This Help topic explains how to set up your RDT preferences in Eclipse.

## Introduction

You may need to specify an installed interpreter before you can start your Ruby development. We will attempt to find a ruby installation on your system and use one if found. In many cases this will work fine, but you may want to add additional interpreters or override our detected interpreter.

## Instructions

Note: Also see Configuring your RadRails setup for more on this topic.

To set your preferences for your Ruby interpreter:

1. Open the workbench preferences by selecting the menu item Window > Preferences.
2. Go to the Installed Interpreters preference page by selecting Ruby > Installed Interpreters in the tree pane on the left. You may already see an interpreter setup. We attempt to detect a ruby install and configure it as the default. In many cases this setup should work fine.

To add a new interpreter:

1. Click the Add button to add a new interpreter. An "Add RubyVM" dialog will appear.
2. Click the Browse button to open a folder selection dialog. Navigate to the root install of your ruby installation. On window this is typically C:/ruby. On Mac and *nix, it is typically /usr or /usr/local.
3. Click OK. The "Add RubyVM" dialog should perform some validation and hopefully show detected libraries.
4. Click OK. Your new interpreter should be added to the list.

## Related Topics

- Getting Started with Ruby development
- Preparing the Ruby Workbench
- Configuring your RadRails setup

Retrieved from "http://aptana.com/docs/index.php/Important_Ruby_Settings"

Categories: AptanaHelp | RadRails | RDT