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.
That is true for lots of things.
Moreover I use one easy “default” password for all basic stuff, and its always the same known to my spouse and written down on paper.
At least my offsite backups are protected from prying eyes. Maybe uneeded for local backups, but doesn’t hurt to have.