note McDarren If you just want to pass these files one by one to your "tool", and you don't care about any output, then you can use [doc://system] <p>However, if your "tool" produces output that you want to capture and process, then you'll probably want to use backticks, eg: <code> $output_from_my_precompiled_tool = `/path/to/my/tool $file`; </code> Cheers,<br> Darren 953288 953288