I want this job to execute at 9:55 tonight.
Normally, that would be simply:
at 2155
/bin/foo
^D
But, I want this one to execute in tmux, so I can keep an easier eye on it.
So, it's time to whip out the poor man's scheduler!
sleep 47400; /bin/foo
With #UNIX, there is always more than one way.