So I am flowing your guide but I am a total noob with command line, and I am getting stuck at this part (Proceed to create a configuration file for cloudflared by copying the following in to /etc/default/cloudflared. This file contains the command-line options that get passed to cloudflared on startup.), tried copying the commands under that getting a command not found error, again total noob I'm sure I am missing something easy, but can't figure it out if anybody could help that would be amazing.