update ssh-pubkey cheatsheet

ssh-pubkey/README.md

@@ -7,3 +7,33 @@ linux: true
 description: |
   `ssh-pubkey` will make sure you have an SSH key, and then print it to the screen and place it in `~/Downloads`
 ---
+
+Get your public key, the easy way:
+
+```bash
+ssh-pubkey
+```
+
+```txt
+~/Downloads/id_rsa.johndoe.pub:
+
+ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDTOhRnzDJNBNBXVCgkxkEaDM4IAp81MtE8fuqeQuFvq5gYLWoZND39N++bUvjMRCveWzZlQNxcLjXHlZA3mGj1b9aMImrvyoq8FJepe+RLEuptJe3md4EtTXo8VJuMXV0lJCcd9ct+eqJ0jH0ww4FDJXWMaFbiVwJBO0IaYevlwcf0QwH12FCARZUSwXfsIeCZNGxOPamIUCXumpQiAjTLGHFIDyWwLDCNPi8GyB3VmqsTNEvO/H8yY4VI7l9hpztE5W6LmGUfTMZrnsELryP5oRlo8W5oVFFS85Lb8bVfn43deGdlLGkwmcJuXzZfostSTHI5Mj7MWezPZyoSqFLl johndoe@MacBook-Air
+```
+
+Create an SSH keypair if you don't have one:
+
+```bash
+[ -f "$HOME/.ssh/id_rsa" ] || ssh-keygen -b 2048 -t rsa -f "$HOME/.ssh/id_rsa" -q -N ""
+```
+
+Copy your public key to `~/Downloads`:
+
+```bash
+rsync -av "$HOME/.ssh/id_rsa.pub" "$HOME/Downloads/id_rsa.$(whoami).pub"
+```
+
+Print your public key to the Terminal:
+
+```bash
+cat "$HOME/Downloads/id_rsa.pub"
+```