hex
3 types of programs:
$ foo -h
invalid option -- 'h'
Try 'foo --help' for more information.
$ foo --help
invalid option -- '-'
usage: foo [-iuegnvlairKnsivrngvV] qux blarg
$ foo --help
unknown option '--help', continuing anyway
deleting your files...
^C^Cdeleting more files...^C
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