There are several ways to approach that. Here are a couple of the easiest:

• opendir will let you read the list of files in the source directory. You could then use a foreach loop to open each of them in turn, read the contents, do your transformation, open a corresponding file in the output directory, and write your transformed content to it.
• You could also just use a pattern glob, perhaps something like this:

  foreach my $file (</path/to/sourcedir/*>) {
     # ...
  }
  [download]

  This is slightly less portable (because the syntax of your glob is platform-dependent), and less flexible (because the glob is hardcoded, so it's harder to do things like read the source directory path from a config file), but for a quick-and-dirty hack, it's easier to get working quickly.

HTH.HAND.

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