Code:
% softwareupdate --list-full-installers
Finding available software
Software Update found the following full installers:
* Title: macOS 12 Beta, Version: 12.0, Size: 11783915827K, Build: 21A5248p
* Title: macOS Big Sur, Version: 11.4, Size: 12395342506K, Build: 20F71
* Title: macOS Big Sur, Version: 11.3.1, Size: 12411305377K, Build: 20E241
* Title: macOS Big Sur, Version: 11.3, Size: 12425084347K, Build: 20E232
* Title: macOS Big Sur, Version: 11.2.3, Size: 12211077798K, Build: 20D91
* Title: macOS Catalina, Version: 10.15.7, Size: 8248985973K, Build: 19H15
* Title: macOS Catalina, Version: 10.15.7, Size: 8248854894K, Build: 19H2
* Title: macOS Catalina, Version: 10.15.6, Size: 8248781171K, Build: 19G2021
* Title: macOS Mojave, Version: 10.14.6, Size: 6038419486K, Build: 18G103
Not sure about the fetch command though, looks like it is trying to install it again:
Code:
% softwareupdate --fetch-full-installer --full-installer-version 12.0
Scanning for 12.0 installer
MBDisplay: creating data for display 0x4280F40 (main) with bounds o=[0.000000, 0.000000], s=[1440.000000, 900.000000]
Installing: 17.0%