Agreed there's a fine line. I somehow find myself a little further along the spectrum - Perhaps I'm jaded from dealing with too many recruiters who are trying to check boxes.

If I really thought this job was worth my time, I would've updated my resume to say UNIX and Linux, and then clarified during the first interview with a technical person.

Which incidentally is why so many actually technical people are tired of all these resumes that say an applicant has a skill they don't actually have.

Wrong: "Yep, I have UNIX experience!"

Right: "Yep, I have Unix experience! I have worked on Solaris which is a bonafide Unix system. I also have experience with Unix-like systems like FreeBSD and Debian GNU/Linux."

Solaris and AIX /are/ UNIX. Solaris is derived from SunOS, which is derived from 4.2BSD, which was directly licensed by Sun from AT&T via a UNIX source license. Solaris and SunOS were both certified as UNIX.

Similarly IBM licensed AT&T UNIX and derived AIX. It is still certified as UNIX.

The Open Group holds the UNIX trademark and copyrights and conducts the certification and licensing process these days.

See here: https://www.opengroup.org/openbrand/register/

You've posted functionally the same comment multiple times in this thread. No matter how many times you say it, you are technically incorrect. UNIX is a valid piece of terminology when referring to commercial Unix OSes.

> Solaris and AIX /are/ UNIX.

Did you read my comments carefully? I am saying the same thing as you are. I am saying that Solaris and AIX /are/ bonafide Unix systems in all my comments.

They are focusing on the distinction between UNIX and Unix.