Open Terminal and navigate to the folder where you saved the script. Run the following command:

Released in October 2013, OS X Mavericks (version 10.9) marked a significant turning point for Apple’s desktop operating system. It wasn't just a collection of new features; it symbolized a major philosophical shift. For the first time ever, Apple made a Mac operating system —a move that shocked the industry and accelerated the adoption of modern macOS across millions of devices.

Open and paste exactly: