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.
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The thing that got me to switch was being able to maintain my pane layout between connections. The various window and pane management niceties (naming, swapping, listing and the like) got me to stay. Now you can keep your screen, but you’d have to pry tmux from my cold, dead, tty.
Tmux was purpose built for terminal multiplexing. You can assign session names for organizing and manipulating multiple instances. Send keys to and read output from detached sessions. It’s easy to script.
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Sorry, it was, just not for exploring all of those instances at once. Should have called out the tiling function. Screen also built in a serial terminal emulator and started playing with a few other things.