The dumbest “yes-man” Linux command: yes!
It has only one aim: to indefinitely repeat what you tell it. Useful if pipelined with interactive cmd line installers (where you usually have to type “y” a lot of times in order to accept the default values) and similar borying operations.
So, for example if you go with:
it keeps on printing the cmd line arguments followed by a new line character (CTRL+C to stop execution):
test test test [...]
…and if you do not specify any argument, it just says:
y y y y [...]
Yes, man! 🙂