this post was submitted on 22 Oct 2026
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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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A few years ago at $DAYJOB, we were evaluating Apache Nifi, which is basically a data routing tool. I wanted to use it for reading some files from one directory and just writing them back out to another.
So, I figured, I have two stray files in my home-directory, I'll just tell it to read straight from the home-directory.
What I didn't expect, is that it would recurse into subdirectories.
And even less so, that it would remove the files it had read.
So, all the files in my home-directory were gone.
Although, it had written them dutifully to that other directory. So, in theory, I still had all my files.
But it hadn't copied the folder structure. Documents, SSH keys, cache files, everything was placed into a single, flat folder.