1. Computing

Installing Ruby

Getting Ruby Up and Running

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Though it would be nice to turn on your computer and have it Ruby ready, the truth is there's some installing to do before you get started. In fact, even if you have Ruby installed already, it's well worth checking your installation to make sure you're using the latest version. Installation is a relatively simple process, no matter what operating system you use.

Installing Ruby on Windows

Using the Ruby One-Click Installer for Windows:

Installing Ruby for Windows is a simple enough affair. Though you can choose to install the compiled binaries, for the beginning Rubyist, using the one-click installer is probably the better option. This option not only guides you through the process, but it also installs a number of built-in libraries.

Visual Tutorial: Installing Ruby on Windows:

Sometimes it's just easier to be able to see something while or before you do it. If you're a visual learner, this installation tutorial will walk you through the installation process complete with screenshots.

Installing Ruby on Mac OS X

How To Install Ruby on OS X:

Though Ruby is pre-installed on Apple OS X Leopard and Tiger, depending on the version of OS X your computer is running, there may be a more recent version available and your Ruby interpreter may need to be upgraded. If you're using the MacPorts software package, installation is as simple as running the following command:

 % port install ruby 

Installing Ruby on Linux

How to Install Ruby on Linux :

Ruby is installed on most Linux distributions by default,though if you prefer you can also download the source code above and compile by hand. We prefer to do it the Ruby way, that is, as simply as possible.

Installing Multiple Versions of Ruby:

Why would you want to have two different versions of Ruby running alongside each other? Unfortunately, as happened with the upgrade from Ruby 1.8 to Ruby 1.9, it can often be some time before Linux distributions can create packages for the newest interpreter, particularly if there are significant changes from version to version. However, you can install and upgrade it yourself, alongside your current version of Ruby, and start exploring the new features right now. Installation does take a little more effort since you will be compiling from source, but it won't conflict with your existing Ruby installation.

Installing Ruby-Related Extras

Graphical User Interfaces: Installing Tk:

The Tk GUI toolkit was originally written for the TCL scripting language, but has since been adopted by many other languages including Ruby. Though it's not the most modern of toolkits, it is free and cross-platform and is a good choice for simpler GUI applications.

Installing RubyGems:

Why re-invent the wheel? If somebody else has written a module to do what you want to do, it may be in the RubyGems library. Simply install and search the RubyGems repository instead.

Visual Tutorial: Installing Rubygame on Windows:

Though certainly not a necessity for Ruby programmers, if you want to blow off some steam and have some fun, RubyGame is a must. Create your own video games and program simply for fun.

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