$ curl cheat.sh/

# uuidgen
# Generate unique identifiers (UUIDs).
# See also `uuid`.
# More information: <https://manned.org/uuidgen>.

# Create a random UUIDv4:
uuidgen --random

# Create a UUIDv1 based on the current time:
uuidgen --time

# Create a UUIDv5 of the name with a specified namespace prefix:
uuidgen --sha1 --namespace @dns|@url|@oid|@x500 --name object_name

$

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