Which Linux command or utility is simple, powerful, and surprisingly unknown to many people or used less often?
This could be a command or a piece of software or an application.
For example I’m surprised to find that many people are unaware of Caddy, a very simple web server that can make setting up a reverse proxy incredibly easy.
Another example is fzf. Many people overlook this, a fast command-line fuzzy finder. It’s versatile for searching files, directories, or even shell history with minimal effort.
Came here to say both of these things. (Awk and “> simple”.)
To be totally honest, I don’t think awk is any more complicated than something like grep, it’s just that regular expressions get used more often so they’re typically more familiar. In the same way that programming languages with c-like syntax (like Java and C#) often feel easier than ones that don’t (like Haskell and Clojure).
Awk is a turing complete programming language.