tieubao

Important: I'm writing this when the last version of macOS (and the one I have installed) is Mojave. There is already a script which installs Mojave in a virtual machine here https://github.com/img2tab/okiomov. But if you are curios how to do everything manually to install High Sierra, then this guide may be useful.

After reading a few articles I ended up with these steps:

1. On macOS, download the High Sierra installer (even if you have Mojave installed): https://itunes.apple.com/us/app/macos-high-sierra/id1246284741?ls=1&mt=12
2. If the High Sierra Installer starts, quit it.
3. Open "Disk Utility".
4. Click on "File" > "New Image" > "Blank image...". Or just press cmd+N.

grenade

#!/bin/bash

mkdir -p ~/.ssh

# generate new personal ed25519 ssh keys
ssh-keygen -o -a 100 -t ed25519 -f ~/.ssh/id_ed25519 -C "rob thijssen <rthijssen@gmail.com>"
ssh-keygen -o -a 100 -t ed25519 -f ~/.ssh/id_robtn -C "rob thijssen <rob@rob.tn>"

# generate new host cert authority (host_ca) ed25519 ssh key
# used for signing host keys and creating host certs