this post was submitted on 15 Sep 2025
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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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Hopefully I can piggyback with a similar question that came to me recently. Similar to how Ubuntu/Mint work, Fedora KDE can be updated through the Discover store or directly via the
dnf
command. But after updating system packages via Discover, it prompts me to restart the PC to finish the update. What is it actually doing? Why does DNF not do that?Some stuff needs a restart to use the new libraries and such when those things are already in use, since it doesn't actually delete those until they stop being used. For example, if you get a new kernel, it won't just delete your old one until you're done using it. Terminal tools usually assume that you know this, so they won't prompt you.
the prompt to restart happens to me on debian when using the software manager too.
Some things only get applied once you restart. Take the kernel for example. It will be used once restarted. It is safe to restart at a later time but you would still be running a older kernel at that point.
So technically the update is done but not everything is using it yet. Dnf does tell you you should restart for some things to be applied. The choice is yours to do so.
It's safer, and uses a systemd mechanism to update with most programs not running.
That said, I've never had a problem updating without restarting...
You can change the behavior in System Settings -> Software Update -> Apply System Updates
Pick either immediately or after rebooting