There come times when you need to know not only what version of macOS that you're running, but also where you may want to know the actual build number.
This information usually comes mostly in handy when you're running betas, but sometimes when filing bug reports with Apple, they might ask you to provide them with what version of macOS you are running on your Mac and the build number it shows.
In this tutorial, we'll show you not only how to find out what version of macOS you're running, but also where to find the build number of the version of macOS you have installed.