I like it! That's a great idea.

To me, this sounds like a great practice for terminal environments but may be less intuitive when using file system apps. I could easily overlook a single letter capitalization in a GUI view of many directories. Maybe it's because at a terminal the "view" into the file system is narrow?

Now I'm wondering how I can use this in my docker images. I mean that might irritate devops. Well, maybe they'll like it too. Man, thanks for posting this.