Just a random page about apple stuff
Downloading/Creating MacOS USB stick
CLI download of MacOS:
softwareupdate -d --fetch-full-installer --full-installer-version 10.15.7
File appears in users application folder.
Creating USB stick from the downloaded file.
sudo /Applications/Install\ macOS\ Catalina.app/Contents/Resources/createinstallmedia --volume /Volumes/UNTITLED --nointeraction