- https://support.apple.com/en-us/HT201260
- https://github.com/MagerValp/AutoDMGUpdateProfiles/blob/master/UpdateProfiles.plist#L39
- https://whatpulse.org/app/install-macos-sierra#versions
- https://en.wikipedia.org/wiki/MacOS_Sierra#Releases
- https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk114213
- https://web.archive.org/web/*/https://medium.com/@iosight/how-to-legally-download-any-previous-version-of-an-app-store-app-through-itunes-9b45559b8357
- https://web.archive.org/web/20171019184054/http://www.idownloadblog.com/2015/12/25/how-to-download-older-versions-of-ios-apps/
- https://web.archive.org/web/20171105190220/https://macops.ca/what-macos-version/
- https://support.apple.com/en-us/HT208202
hdiutil create -srcfolder /Applications/Install\ macOS\ Sierra.app ~/Downloads/Install\ macOS\ Sierra.dmg
open '~/Downloads/Install macOS Sierra.dmg'
open '/Volumes/Install macOS Sierra/Install macOS Sierra.app/Contents/SharedSupport/InstallESD.dmg'
open '/Volumes/OS X Install ESD/BaseSystem.dmg'
/usr/libexec/PlistBuddy -c 'Print :CFBundleShortVersionString' '/Volumes/Install macOS Sierra/Install macOS Sierra.app/Contents/Info.plist'
/usr/libexec/PlistBuddy -c 'Print :ProductVersion' '/Volumes/OS X Base System/System/Library/CoreServices/SystemVersion.plist'
/usr/libexec/PlistBuddy -c 'Print :ProductBuildVersion' '/Volumes/OS X Base System/System/Library/CoreServices/SystemVersion.plist'