@UUID[n] : Returns a UUID (same as a GUID in Windows). n can be:
0 - returns the UUID with lower case alphabetic characters and embedded hyphens
1 - returns the UUID with upper case alphabetic characters and embedded hyphens
2 - returns the UUID with lower case alphabetic characters and no hyphens
3 - returns the UUID with upper chase alphabetic characters and no hyphens
Examples:
echo %@uuid[0]
2a1f64b4-d2cd-4e1b-accf-60effe6065f2
echo %@uuid[1]
94D8C597-5DD9-4947-95B5-B80B9EA223A0
echo %@uuid[2]
d9ccee3db2ad408fadea484cf8bdc977
echo %@uuid[3]
8A0EC71BD8ED4D1B986D071DF96426AE