Opps.. thanks for clarifying my command line mistake.
Its not so much a issue per se - just trying to get a printer that works with PureOS which doesnt have WiFi. I figure thats the most secure way to create the paper backup. To my understanding, PureOS only works with open source driver printers, figured the community has gone down this rabbit hole before.
Also, is it good practice when using Armory to also create paper backup for the key list just to be safe?