this post was submitted on 07 Dec 2024
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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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There's lots of examples. Mir, Unity, Snap, PPAs, and more.
I think Ubuntu Core is a bad example. Immutable distros is where the industry is headed for a lot of good reasons, and it makes sense for Canonical to jump on that train. Snaps are bad (although honestly I do like that they can package server apps unlike flatpak, that's cool), but the concept for the distro is not.
Ubuntu Core is all snaps. That's the selling point.
The selling point is that it is immutable, not that it uses snaps (which it does). Fedora does the same thing with Silverblue and IoT. You don't install rpms, you install flatpaks. You can install rpms, but you're not really meant to.
Since Canonical refuses to get onboard with flatpak (for now) they use snaps instead of debs, but snaps aren't the direct appeal.
The whole idea is that you have a core system in a known configuration. Updating the system just means using a different image. If an update fails, then you just roll back to the last good configuration. Bazzite uses this to nice effect too.
There are a lot of advantages to end users and enterprise admins with systems in this configuration.