Taken from the CompTIA IT Fundamentals Exam Guide book (2nd edition, published 2021). I'm not sure if they fixed this in newer versions, if at all.
From Wikipedia, the free encyclopedia
Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
Community icon by Alpár-Etele Méder, licensed under CC BY 3.0
Well, GNU is a Linux based OS. Is they would write „GNU is a LINUX/GNU variant“ it would confuse more than it would teach.
Not exactly. GNU/Linux is an OS using the Linux kernel and the GNU Software Suite. But GNU can also be its own OS on its own if you use Hurd.
There also used to be Debian GNU/kFreeBSD, pretty sure there have been GNU/NetBSD variants in the past as well
Also GNU/Hurd variant
[This comment has been deleted by an automated system]
What is GNU?
GNU is an operating system that is free software—that is, it respects users' freedom. The GNU operating system consists of GNU packages (programs specifically released by the GNU Project) as well as free software released by third parties. The development of GNU made it possible to use a computer without software that would trample your freedom.
Directly from the official GNU website : https://www.gnu.org/home.en.html
And btw an OS is more than a kernel, the kernel is „just“ the foundation on witch the OS works. Hardware communication is on kernel level, for example.
[This comment has been deleted by an automated system]
Gnu is a dream, a thundering Hurd of dreams