What is TTY?
This is an excellent and entertaining intro to the world of TTYs and I think the first question is a particularly clever way to introduce it:<p>> The answer is Ctrl+W. Because Ctrl+W is provided by something called TTY, and the other three are provided by the shell.<p>My only criticism is a pet peeve of mine: screenshots of terminals.  I know it's more work to copy/paste and make sure formatting is correct, and you lose the ANSI colors. But it just feels so wasteful and inaccessible (<img alt="tty">).