Ruby Tuesday #2 : Setting up
The first thing to do is to install Ruby. Along the way, I’m going to use a PC and a Mac. Let’s start with the Mac. Open a terminal and type:
On the Mac I used, which is running Tiger, I got the following response:
ruby 1.8.2 (2004-12-25) [universal-darwin8.0]
OK, so Ruby is already installed on the Mac. But it’s not the latest version, which, at the time of writing, is 1.8.6. Fortunately, there’s a download here on the Apple site that installs 1.8.6 – along with some other bits and bobs including RubyGems. Once installed, open a fresh terminal window and type:
I now see:
ruby 1.8.6 (2007-03-13 patchlevel 0) [universal-darwin8.0]
So, we now have Ruby 1.8.6 installed on the Mac. Clearly, a Hello World is called for. Type:
That launches the interactive ruby shell and type:
puts "Hello World"
Great. Let’s move onto the PC. On the machine I used, running Vista, Ruby wasn’t already installed. There’s a one-click installer for Windows – you can find it here. You can pick the version you want to install, I picked “1.8.6-26 Final Release”. It installs:
the Ruby language itself, dozens of popular extensions and packages, a syntax-highlighting editor, an execution environment, and a help file that contains the full text of the book, Programming Ruby: The Pragmatic Programmer’s Guide.
Test the installation with the now familiar:
Here’s the output I got:
ruby 1.8.6 (2007-09-24 patchlevel 111) [i386-mswin32]
Finally, run the same steps for Hello World via the interactive shell. I got the same result as I got on the Mac, which is nice.
Along the way I found a couple of links that might be useful to anyone else starting Ruby:
So that’s Ruby installed. Now there’s just the small matter of learning the language…