He's not a UNIX co-author at all, he joined Bell Labs in 1980.

pjmlp · on June 28, 2015

Except he contributed to many of the userland tools and was part of the UNIX working group, which does make him a co-author, even if he didn't wrote the first kernel lines.

kasabali · on June 28, 2015

I must admit you have a strange definition of "co-author".

pjmlp · on June 28, 2015

I must admit you have a strange way to ignore Pike's contributions to UNIX initial GUI architecture, his book together with Kernighan about the UNIX programming environment and other contributions.

kasabali · on June 28, 2015

Please don't twist my words. I'm just saying "co-author" have different meanings for you and me.

edit: Really? Downvotes? Not cool.

pjmlp · on June 29, 2015

I didn't downvote you.

As for co-author, the Cambridge dictionary says:

"To write a book, article, report, etc. together with another person or other people:"

Which given Pike's participation on what defined the initial UNIX graphics userland, makes him a co-author.

kasabali · on June 29, 2015

That's where we disagree. You think Blit is one of things what makes UNIX UNIX while I don't. We have different interpretations of "co-author". I don't see any further benefit in discussing that.