I especially like this example:
$ uuencode ? ? > `?`.uu
It shows how to use the file (name) passed to the shell command together with a prefix and/or a prefix on the command line. That’s not trivial, because around the “?” usually only whitespace is permitted to make the mechanism work.
That’s a true and amazing life hack, something that makes my life easier almost every single day of my life.
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