Hoorah! I just found out bash was created by a black man. What a pleasant surprise.
Aha - Jason Cannon's average-rated work is available for free today :) Get it while you can for $0.
Yikes, at Tip #5, you see why it only gets three stars - for command subs this guy says use backticks - when that's what got the dinosaurs. Use $( command ) dude!
A good one, that I didn't know : !# is an alias for the current command line and words are ordered starting with 0. So, in the below command.
$ mv report.txt $(data +%F)-report.txt # basically timestamping
you can do
$ mv report.txt $(data +%F)-!#:1 # cute?
QED
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