Converting an Authentication Key to SSH Key in GPG v2.1.11

Having spent more time than is reasonable trying to convert my GPG Authentication key into an SSH key, and wondering where gpgkey2ssh has gone on Ubuntu 16, finally found the answer.

Turns out (since GPG 2.1.11) it's now as simple as gpg2 --export-ssh-key <Key ID>.

About the Author: Chris is an experienced Software Developer, having been cutting code for organisations large and small since graduating in 2000. He currently specialises in building simple, secure, and elegant Java-based backend services. An Agile enthusiast and Certified Scrum Master, you can find his professional profile at LinkedIn. Away from work you'll probably find him playing football, training for various obstacle course and endurance events, or with his feet up having injured himself doing one.