Branden Robinson's Irrational Exuberance : Debian/stupid_shell_tricks_01.html

"I recently found myself thinking (itself a noteworthy
occurrence)...I've started a what turns out to be a long-running
process at a shell prompt and I don't want to visually monitor it. It
didn't occur to me that it would take a long time when I started it,
and it would be nice to have audio notification of its completion. The
problem is, it's already running."