Why is GNU not Unix-like system?

[Jean Louis]

* Eli Zaretskii <eliz@gnu.org> [2022-02-19 22:39]:
> > Date: Sat, 19 Feb 2022 22:30:47 +0300
> > From: Jean Louis <bugs@gnu.support>
> > Cc: help-gnu-emacs@gnu.org
> > 
> > > "GNU and Unix systems" is standard GNU terminology.  We use it in
> > > umpteen places.
> > 
> > I did not know that. Though what do you think would this expression be
> > more clear:
> > 
> > "GNU and other Unix like systems"
> 
> No.  We really do maintain that GNU is different from Unix systems.

Of course it is different.

Though it was made with purpose to be Unix-compatible system, see:
https://www.gnu.org/gnu/manifesto.html

Please tell me what makes GNU not to be Unix-like system. I am curious
as I was always under impression it is Unix-like system.


Jean

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