Love this guide and having so much value out of my yubikey.

I followed it for myself back in fall when things weren't so automated, and I just helped my friend set up his key today, and while it is nice to be able to copy-paste more commands, one thing that was very useful with the guide then was a pit stop during key generation to run adduid for more emails and names.

I helped him add the extra email out of script when editing the Certify key, but he would not have figured it out without me being there to help.