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Ubuntu turns 20: 'Oracular Oriole' shows this old bird's still got plenty of flight
(www.theregister.com)
This is a most excellent place for technology news and articles.
Slackware was the first real distro, which means you could reasonably expect to get to a bootable state by following the manual, and have a useful system out of the box.
And it's the oldest that's still around.