DD

dd if=rescue.bin of=/dev/fd0 bs=512 conv=sync ; sync


EMACS

abcd
abcd="37%"
foobar
cheese
dung
abcd="5%"
hello

M-x replace-regexp
abcd="[0-9]+%"
<replacement>


CLISP

clisp -K full -q -i clx-demos
while in modules/clx/new-clx/demos
to get the X demos to work.