Where would you find a 7C3457EF-0000-11AA-AA11-00306543ECAC? How UUIDs have taken over to identify so much, and how to generate your own.
uuidgen
What’s a UUID, and a UTI? What can you learn from each, and where can you look them up? Important info about these, and a new release of a tool to help.
They’re almost everywhere now: UUIDs and GUIDs identify disk volumes, printers, even the processes running on your Mac. Here’s an explanation.
The Eclectic Light Company 