The UNIX way

What's so cool about the UNIX philosophy? What would a heavy UNIX philosophy operating system look like? What is the most heavy UNIX philosophy operating system out there at the moment, besides UNIX itself?

>>16
Perhaps, but that way it's guaranteed standardisation across the whole system. Consider how different image libraries each have different interfaces - with plan9, this would not be the case. You'd just choose an image format and the resulting library/file operations would be identical.