You really are clueless, aren't you? Align the codebase timeline of BSD with SCO. Then note that the BSD codebase is not only FAR older than SCO, but that the status of the BSD codebase with respect to AT&T Unix (from which SCO was derived) was established in a rather well-known court drama a long time ago.
If AT&T and Bell Labs (800-lb gorillas to be sure) were unable to assert their Unix ownership over BSD already in court, what makes you think a legal midget like SCO will prevail, particularly when SCO post-dates BSD? If SCO had demonstrated a Linux-only bit of source they *might* have something that at least would make an argument, but using an example that it turns out to exist in old BSD codebases is mindbogglingly stupid since BSDs claim to their old codebases is pretty much court-tested and iron-clad. All this would seem to indicate is that SCO, like most other operating systems, borrowed code from the BSD codebase. (Indeed, this was what the original AT&T versus BSD court battle was about -- AT&T claiming ownership rights to code written by BSD that was added to Unix).
Now that this has been discovered, SCO is going to get reamed. AT&T and BSD already duked it out ages ago and BSD won the right to their codebase in all essential aspects. Taking on Linux was dubious at best, but taking on BSD is downright idiotic.