What about

foreach my $dll (@ARGV) {
   print "$dll\n";
}
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Place this in a file called dllfix.pl or something. Then, from the commandline, you can call "dllfix.pl *.dll", and it should print out all of the dlls. My code only prints the dll name, but you can easily modify it to perform whatever operation on $dll that you want. I leave that as an exercise to the reader.