Thank you Parallels, but it didn't happen for me in Terminal like the instructions. I followed the instructions exactly but the script did not run. I did it as written in the instructions, and also with a space after the "sudo" as shown in the little screenshot. What actually worked was:- 1. Open Terminal, 2. Drag the script in, 3. Hit enter, then it asked for my password, 4. Entered password (does not show password being entered) 5. Hit enter again, 6. Script ran. Finishes up with a message that "your system is pristine"