Let's say that I want to use a command (e.g., md5) on a file.  No
problem; just use:

system("md5 $file");

Except that the file name could contain all manner of white space
characters, shell wildcard characters, etc.  Is there a module that
deals with this sort of thing (e.g., wrapping each argument in the
appropriate kinds of quoting)?

-r

P.S.  This isn't strictly an OSX issue, but I see far more weird
      characters in OSX file names than I ever saw in *BSD, etc.
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