local lfs = require "lfs";
 
local doc_dir = system.DocumentsDirectory;
local doc_path = system.pathForFile("", doc_dir);
local resultOK, errorMsg;
 
for file in lfs.dir(doc_path) do
   local theFile = system.pathForFile(file, doc_dir);
        
   if (lfs.attributes(theFile, "mode") ~= "directory") then
      resultOK, errorMsg = os.remove(theFile);
 
      if (resultOK) then
         print(file.." removed");
      else
         print("Error removing file: "..file..":"..errorMsg);
      end
   end
end