Find the product version and build information of an OS X installer #

The hard way:

Right click the install app and click "Show Package Contents"
Navigate to Contents/SharedSupport and double click InstallESD.dmg (will mount at /Volumes/Mac\ OS\ X\ Install\ ESD/)
(OS X 10.7 & 10.8):
- Search /Volumes/Mac\ OS\ X\ Install\ ESD/System/Library/CoreServices/SystemVersion.plist for ProductBuildVersion and ProductVersion
(OS X 10.9 - 10.11):
- $ open /Volumes/OS\ X\ Install\ ESD/BaseSystem.dmg (will mount the hidden BaseSystem.dmg to /Volumes/OS\ X\ Base\ System)
- Search OS\ X\ Base\ System/System/Library/CoreServices/SystemVersion.plist for ProductBuildVersion and ProductVersion

The easy way, thanks to Johann N. Löfflmann.

UPDATE: Johann has an updated version of his script on GitHub: osxapp_vers (local cache).

/mac | Jul 01, 2016