____.lua

for dir in package.path:gmatch([^;]+) do
  dir = dir:gsub('%?.*$','')
  for file in lfs.dir(dir) do
    print(file)
  end
end

for dir in package.cpath:gmatch([^;]+) do
  dir = dir:gsub('%?.*$','')
  for file in lfs.dir(dir) do
    print(file)
  end
end