Pwgen is a small, powerful, GPL’ed password generator.
This version of pwgen was written by Theodore Ts’o
<>. It is modelled after a program originally written
by Brandon S. Allbery, and then later extensively modified by Olaf Titz,
Jim Lynch, and others. It was rewritten from scratch by Theodore Ts’o
because the original program was somewhat of a hack, and thus hard to
maintain, and because the licensing status of the program was unclear.