I want to make a script for change filename's character not in English for a given directory. But I am not sure where am I starting from due to I am a little bit new user for scripts.
At least is there anybody can help me to make first step ,how can I find illegal or unwanted characters in file names and then maybe I have to make a conversion for example: from ı to i , from ö to o... like this..

Thanks a million.