[ih] Ping Eduardo A. Suárez (was Re: What is the origin of the root account?)

[Jaap Akkerhuis]

    I've heard claims that setuid was also an innovation in unix.  No idea 
    of the construct's history.

It was. As far as I know it was also one of the first software patents
although there was a hardware implementation as well (just for good
measuers). The patent was put in the pubic domain.

Checking wikipedia, there is a page about it:
<http://en.wikipedia.org/wiki/Setuid>

	jaap