You’ll be glad you know ed
on that day when you’re stuck with nothing but a thin-client teletype terminal on Mars and having to edit a file stored on Earth 24 light-minutes away.
Something like that happened in the book “The Martian” by Andy Weir. I loved that part!
I call Andy Weir’s stuff Back-of-The-Envelope-Calculation-fic and Chipperfic, because both his The Martian and Project Hail Mary have a ton of back of the envelope calculations and a chipper protagonist. _