How can I rename all the files with a pattern like this: thumb_f318d8a580ca5717d686a323b6c2ca0d.jpg0000777 thumb_f18d8aup90ca5717d686a323b6c2c5uh.jpg0000777 thumb_jessr8d8a580ca5717d68623etrtckks.jpg0000777 thumb_4hghd8a580ca5717d686a323b6c2ghjj.jpg0000777 .... to thumb_f318d8a580ca5717d686a323b6c2ca0d.jpg thumb_f18d8aup90ca5717d686a323b6c2c5uh.jpg thumb_jer8d8a580ca5717d686a323etrtckks.jpg thumb_4hghd8a580ca5717d686a323b6c2ghjj.jpg .... Thanks