Last time I discussed a rather high-level view of the Linux philosophy in The impact of the Linux philosophy. There were some really good discussions on it, and many blogs syndicated Opensource.com.
One of the comments I received from my previous article was that another operating system has just as much capability on the command line as Linux does. This person said that you could just add this software to get these features and that package if you want those features. That makes my point. With Linux, it is all built in. You do not have to go elsewhere to get access to the power of Linux.