On 2012-01-06, DoN. Nichols wrote:

And I tend to prefer OpenBSD


I also occasionally use OpenBSD, my preference of all the BSDs. It
should be noted they have contributed mightily to the *nix disporia.
Their reworked version of secure shell, OpenSSH, has become the
defacto standard used by almost all *nixes.

So -- in the legal sense, linux is not unix, in that it has no
history from AT&T's code. BSD is now also not unix, because it rewrote
all the code which was AT&T, so only the SysV systems are really still
unix, though they have absorbed many features of BSD.

Technically, you are correct. OTOH, Linux is so much like unix,
anyone truly comfortable with basic Linux would not feel out of place
on a unix box. I can see problems amongst ubuntu users, but users of,
say, Slackware or Gentoo would have few problems. I've pretty much
tried all the unix variants and settled on Slackware, it being the
most unix-like of the Linux distros, IMO.

nb

--
vi --the root of evil