@nixCraft I have set up my zsh so that a sub string (without any key prefix pressed) is sufficient and with cursor up/down only the hits remain in the history.
@nixCraft Answer: this made it possible to connect huge display screens there twenty years ago, long before your pathetic 65-inch televisions were available (you don't have to say that they were just projectors, but the children will still be amazed).
@nixCraft Sir, you are asking about the Erlang runtime environment, aren't you? ;)
On a more serious note: I had a system online on a Raspberry for 3.5 years, a good year of which with a completely defective SD card, i.e. even without a file system, and it was still running. A power failure put an end to the uptime. Not ten years, but good enough? :D
@nixCraft Phoenix (with the extension of LiveView), because it's a dream to do development with it and the runtime is extremly fast and reliable (did I mention the ability to build clusters already comming with the runtime?). On a low server thousands of parallel connections, and even under load responsible. To summarize: a pleasure for devs AND admins :)