Really stupid question here, but when I try to run the same command I get:

C:\Users\whatmeworry>dub add arsd-official
Unknown command: add

USAGE: dub [--version] [<command>] [<options...>] [-- [<application arguments...>]]
   . . .
DUB version 1.11.0, built on Oct  6 2018




I thought about dub init, but that still doesn't give me an 'add' command.

Looking at help screen in Dub, I see add-path, add-local, etc. but the documentation says "dub add arsd-official".

On Thursday, 17 October 2019 at 21:32:34 UTC, WhatMeWorry wrote:
> DUB version 1.11.0, built on Oct  6 2018

`dub add` got added at the end of 2018 IIRC, so you need to upgrade Dub.