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As mentioned in the introductory paragraph, SQLite is a self-contained, serverless database engine.
As such, there’s not much more to it than the actual download and compilation steps.
If you haven’t installed the tools yet, and don’t have your installation CD handy, you can download the Xcode package for free (although at more than 900MB, it’s a hefty download! To install Xcode, run the packaged installer by clicking on the For the next few steps, we’re going to leave the comfort and security of our pretty graphical user interface and tackle the much geekier UNIX command line.
If this is the first time you’ve used the command line on your Mac, don’t worry—we’ll be using it often as we work through this book, so you’ll have plenty of practice! First, open up a UNIX session in OS X using the Terminal utility. (On UNIX-based systems such as Mac OS X, files that start with a period are usually hidden files.) If you type out the following command exactly, your PATH environment variable will be set correctly every time you open a new Terminal window: The process of extracting, configuring, and compiling the source code for all the packages that we’ll be downloading will take up a reasonable amount of space on your hard drive.
Without further ado, enter this command to install Rails: This command prompts the Ruby Gems system to download Rails and the packages on which it depends, before installing the necessary files and documentation.
Whenever you want to upgrade Rails, just enter that command again, and your system will be updated. In fact, if you’re running the above command on Mac OS X 10.5, that’s exactly what you’ll be doing: upgrading your existing Rails installation.
The last thing we need to do is install the storage container that’s going to house the data we (or our users) enter through our application’s web interface, the SQLite database engine.
All you’ll need to do is update your Rails installation, but we’ll worry about that when we reach that step in the Rails installation instructions for Mac OS X 10.4—you’ll see that it’s very easy. “My slightly older Mac comes with Ruby preinstalled! However, the version of Ruby that shipped with OS X prior to version 10.5 is a slimmed-down version that’s incompatible with Rails, and is therefore unsuited to our needs.
Of course, it wouldn’t do you any harm to read through all of the steps below anyway, just to make sure that you’re familiar with the software components and concepts that are introduced; for example, the Mac OS X Terminal, the command line interface, and Ruby Gems. While there are packages out there that make the installation of Ruby easier, such as Mac Ports, for the sake of completeness, I’ll show you how to build Ruby on your machine from scratch.Unfortunately, it’s no longer maintained by its creator, Ryan Raaum.