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.
I like batcat aka bat, but nominate the humble ‘cat’ instead.
Want to copy a disk image to a device? You can use cat for that:
cat file.iso>/dev/sdf
What to copy local stdout over ssh? Use cat.
ls -l | ssh myhost 'cat >out.txt'
That’s simple and surprisingly powerful.