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Ackchyually, not every Linux is a GNU Linux
(lemmy.ml)
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
@entropicdrift considering how universal IRC is for open source and how other solutions are persistently lacking for the purpose (either by being proprietary, lacking decent clients, having embarrassing protocol decisions, being obscure, etc), there isn't really much other choice (that's not to say IRC is anywhere close to without flaws but it's simple, low barrier of entry, and resilient)