In code
Generate a UUID in Ruby
SecureRandom.uuid ships with Ruby's standard library.
Ruby example
Ruby
require "securerandom"
id = SecureRandom.uuid
No install? Use the tool or API
Here's a fresh version 4 UUID generated right now — copy it, or call the API from any language.
fd412a3c-0cd5-44b2-9989-25ca0a7b4088
curl https://getuuid.sh/api/uuid