ELI5: Explain Like I'm 5

Aufs

AUFs (Advanced Multi-Layered Unification Filesystem) is a way to combine multiple directories on a computer together into one. Think of it like a sandwich where each layer is a different type of filling. Each of the layers can be changed or moved around, but when put together they make one delicious sandwich.

In the computer world, each layer is a directory and the AUFs system combines them into one directory. When you look at the combined directory, you'll see all the files and folders from all the original directories mashed together. But remember, it's like a sandwich so you can change or move any of the individual layers without damaging the others.

This system is really helpful for creating "overlay" directories. A good example is when you download something like an operating system upgrade. You might need to combine files from a few different directories like the original operating system and the new one to create a complete update. AUFs makes this possible.

To summarize, AUFs is like building a sandwich by layering different fillings on top of each other. Similarly, it combines directories on a computer into one useful directory.
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