tldr/pages/linux/uuidgen.md

uuidgen

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

• Create a random UUIDv4:

uuidgen {{[-r|--random]}}

• Create a UUIDv1 based on the current time:

uuidgen {{[-t|--time]}}

• Create a UUIDv5 of the name with a specified namespace prefix:

uuidgen {{[-s|--sha1]}} {{[-n|--namespace]}} {{@dns|@url|@oid|@x500}} {{[-N|--name]}} {{object_name}}