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this post was submitted on 30 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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One more puzzle piece here is that
duwon't report on files that have been marked for deletion but are still held on to by some process. There's anlsofincantation to list those, but I can't recall it off the top of my head.It used to be part of sysadmin work to detect the processes that held on to large files if
dfreports that you're running out of space, and restart them to make them let go of the file. But I haven't done that in ages. And if you restarted the host OS that should have taken care of that.I assume you also know how to prune container resources.
Good call on the docker prune, I didn't think about that. That accounted for about 25GB. Still not enough but at least I'm not at 99% anymore.