2 ms·

I never even knew about that command...

• Freak_NL 9y ago
  Me neither. I just asked two colleagues (one on MacOS, one on Ubuntu) and got the same “huh, I never knew?” response I had. Sure there are tons of unknown commands on any OS, but a one-letter command you've never heard of somehow amplifies the amazement.
• jlgaddis 9y ago
  In a (normal/typical) shell, hit "<Tab><Tab>y" and be amazed.