“The OS” doesn’t exist. The operating systems you’re talking about are called Debian, Ubuntu, Arch, Fedora, RHEL, etc etc. The main work of making an actually usable OS from the various free software components others have written has always been done by the teams responsible for these products.
But we still need a way to refer to them collectively, and it used to make sense to call them “Linux” because they were pretty much the only operating systems that used the Linux kernel, but now that Android is the most widely used OS on the planet, it doesn’t anymore, and this alone is a reason to say GNU/Linux unless you want to include Android.
Except Alpine & those based on it, which uses Linux but not GNU libc or GNU coreutils or GNU BASH… Just musl libc & Busybox. I.e. the entire subject of this thread is one of the non-GNU Linuxes.
“The OS” doesn’t exist. The operating systems you’re talking about are called Debian, Ubuntu, Arch, Fedora, RHEL, etc etc. The main work of making an actually usable OS from the various free software components others have written has always been done by the teams responsible for these products.
But we still need a way to refer to them collectively, and it used to make sense to call them “Linux” because they were pretty much the only operating systems that used the Linux kernel, but now that Android is the most widely used OS on the planet, it doesn’t anymore, and this alone is a reason to say GNU/Linux unless you want to include Android.
Systemd/GNU/Linux/GTK or Systemd/GNU/Linux/QT, really…
GTK being a part of GNU (at least originally)
Sure, I should have gone further.
Systemd/GNU libc/GNU Coreutils/GNU BASH/Linux/X11//GTK/GNOME
Systemd/GNU libc/GNU Coreutils/GNU BASH/Linux/X11/GTK/LXDE
Systemd/GNU libc/GNU Coreutils/Zsh/Linux/X11/GTK/GNOME
Systemd/GNU libc/GNU Coreutils/Zsh/Linux/X11/GTK/LXDE
SysVInit/musl/Busybox/tcsh/Linux/csh
Systemd/GNU libc/GNU Coreutils/Zsh/Linux/Wayland/QT/KDE Plasma
Systemd/GNU libc/GNU Coreutils/Zsh/Linux/Wayland/QT/LXQT
etc, etc.
There are thousands of combinations of the possible layers needed to make an OS.
the thing is that not all of them use systemd or bash or zsh or even X11 (servers don’t usually have X11 installed)
All of them use a Linux kernel and many components that were originally developed for GNU, especially the C library.
Except Alpine & those based on it, which uses Linux but not GNU libc or GNU coreutils or GNU BASH… Just musl libc & Busybox. I.e. the entire subject of this thread is one of the non-GNU Linuxes.