this post was submitted on 22 Jun 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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Sorry to ask, I'm not really familiar with Linux desktop nowadays: I've seen Flatpak and Flathub talked about a lot lately and it seems to be kinda a controversial topic. Anyone wanna fill me in what's all the noice about? It's some kind of cross-distro "app store" thingy?
Flatpak is a universal application packaging standard for Linux. It allows devs to create a single application that gets bundled with all necessary dependencies including versioning.
These apps run in their own semi-isolated "container" which makes immutable distros possible. (Distros like Fedora Silverblue that are effectively impossible to break by installing or removing critical system files.)
This means that a Linux app doesn't have to have a .deb version, an .rpm version, or be pre-compiled for any other distros. A user can simply go to Flathub, (the main repository for Flatpak apps), download the flatpak, and install it on their distro of choice.
It's quickly becoming the most popular way for users to install apps on Linux because it's so easy and quick. But there are a few downsides like size on disk, first party verification, per-distro optimizations, and the centralization of application sources. That's why some users aren't fully endorsing or embracing how popular they are becoming.
Cool, thanks for the explanation.
Does that mean that if I were to install Application A and Application B that both have dependency to package C version 1.2.3 I then would have package C (and all of its possible sub dependencies) twice on my disk? I don't know how much external dependencies applications on Linux usually have but doesn't that have the potential to waste huge amounts of disk space?
Most dependencies are bundled in the "runtime" images, and it uses file deduplication to reduce the size of the dependencies, but it's still a little more than a normal package manager.