I'm NOT a programmer…. but I have a little Python script on OS X that converts files, that are in a folder, from one format to another. Script = fxp2aupreset.py I can successfully run it from the command line: 1st, I placed the folder that I named 'ddd' on the desktop so that it's easy to get to. 2. Terminal : cd ~/Desktop/ddd 3. Then I run the script from terminal : python ./fxp2aupreset.py ./ aumu Alb3 LinP vstdata It executes fine and does it's job. BUT… I have per 7600 files that are segregated into 86 folders. I want to keep this folder structure. So, What I need the script to do is to start at the parent folder (ddd) and then go through each subordinate (child) folder and perform its task on all files. I found this syntax on the web that is somehow supposed to do what I need: for /r %a in (*.fxp) do example.py "%a" BUT … I have no idea how to combine the syntax. Could someone put this together for me please. Something that I could just copy and paste into Terminal. I would be most grateful. Thank you very much!