mcookie Generates random 128 bit hexadecimal numbers. Generate a random number: mcookie Generate a random number, using the contents of a file as a seed for the randomness: mcookie --file {{path/to/file}} Generate a random number, using a specific number of bytes from a file as a seed for the randomness: mcookie --file {{path/to/file}} --max-size {{number_of_bytes}} Print the details of the randomness used, such as the origin and seed for each source: mcookie --verbose