The question here is really what do you mean by a "Linux Ubuntu Conversion File"? The primary difference between Linux text files and Windows files is that Linux uses a Carrage Return (CR) at the end of a line and Windows uses a Carrage Return and a Line Feed (CR LF). If you have a linux text file and try to open it with Notepad you get the Lines of data all run together. Open it with Wordpad or MS Word and the apoplication will convert the text for you.
But back to my first point, what do you mean by a "Linux Ubuntu Conversion File"?