In roguelikes (https://en.wikipedia.org/wiki/Roguelike), items made by the elves
have a reputation of high quality. These are usually called elven
items, but "elvish" was chosen because it ends with "sh",
a long tradition of Unix shells. It also rhymes with fish
(https://fishshell.com), one of the shells that influenced the philosophy of
The word "Elvish" should be capitalized like a proper noun. However,
when referring to the elvish command, use it in lower case with fixed-width
font (like in this sentence).
The adjective for Elvish (as in "Pythonic" for Python,
"Rubyesque" for Ruby) is Elven.
Whoever practices the Elvish way is called an Elf. The
GitHub organization (https://github.com/elves/) is called Elves for this