Meanwhile, me over here with the self-doubt slamming ctrl-z
This paper describes the paradigm in detail, they’re called Orthodox File Managers.
I learned Norton Commander way back in the 90s, then moved to Midnight Commander, and it’s still a key part of my toolset. Using the keyboard in a hybrid shell / tree view mode is still the single most efficient way I’ve found to manage files. Need to find files under a subdirectory? Press F7. Need to move an entire directory somewhere else? cd to it, then press F6. Want to move all the pdf files under a subdirectory somewhere? Use the find dialog, then move the search results. No mouse/trackpad needed, everything is at your fingertips.
Somewhat related, at least on Linux and OSX, GNU Stow is a great way to manage dotfiles.
For a lot of these you need to study/practice on sites like HackerRank for a while first. Some companies go overboard and expect you to build some crazy recursive dynamic programming implementation in 15 mins without an IDE, others are more realistic and just want to see if you know things like algorithm complexity, can pick appropriate data structures, and write logical and clean code. And yes, very little of it applies to what most of us do day to day. Anyways, HackerRank is great for interview practice, you can Google for pretty much any solution to their questions.
Any one who worked on an Oracle DB when they had the 30 character object name limit learned to make names like this. You’d figure out all your domain objects, and abbreviate them all (person could be PRS_, account could be ACCT_, etc). It was a horrible experience.