IIRC, it doesn't exist on such a system; that's a Mac OS command, not a Darwin command. (The man page correctly has "Mac OS X" in the footnote, not "Darwin" or "BSD", though I don't know that you can rely on that 100%.) -wsv On Sep 22, 2005, at 10:20 AM, Guido van Rossum wrote:

On 9/22/05, Wilfredo Sánchez Vega <wsanchez@apple.com> wrote:

...

"rhapsody" is emitted by uname on Mac OS X Server 1.x, but not on anything we ship today.

Bob's right, the version number from uname only tells you about the kernel, and not whether, for example, the Cocoa API is on the system (it wouldn't be on a standalone Darwin OS install, which will have the same uname output).

Just curious -- what would sw_vers print on such a system?