How to Find the Build Number of Mac OS X on a Mac
Each release of MacOS or Mac OS X has a unique build number assigned to it to represent the changes found in that version of system software, often these changes are minor and incremental, but with major Mac OS X releases the build numbers can change significantly. Though average Mac users won’t need to know the build number of their system software, those running developer builds and beta releases often pay attention to these software versioning alphanumeric strings. With that in mind, we’ll show you a few ways to quickly find the build number of Mac OS X system software installed on any Mac.