uuid replaced by uuidgen in mac OS 10.14

[Diegus83]

The script returns a License error since the command uuid is not available in mac OS Mojave (10.14) and can't be easily installed via brew.
There is a similar command available uuidgen that provides the same functionality (generating a random UUID).
A simple solution is to create an alias in bash uudi -> uuidgen or replace the single use of uuid in the script by uuidgen

[chbrown]

Good call. uuidgen seems pretty standard (i.e., widely available), so I don't know why I went with uuid originally. Fixed. Thanks :)