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What's the most obscure distro you can think of
(slrpnk.net)
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.
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Yellow Dog
I actually ran this on a PPC Mac back in the day
That was the my first distro. Getting it to run off a FireWire drive was an interesting introduction to Linux.
Fun fact: yum stands for Yellow dog Update Manager. I know it's been replaced by dnf but I still think that's cool.