convmv

Converts File Names from One Encoding to Another

convmv is meant to convert the filenames in a directory tree or a whole file system into a different encoding, with support for symlinks. This is useful for converting from old 8-bit locales to UTF-8. It is also possible to convert directories to UTF-8 that are already partly UTF-8 encoded. convmv can convert names to both the NFC and NFD normalization forms. NFC is commonly used on Linux and (most?) other Unix-like OSes, though does not enforce it. Darwin, the base of Macintosh OS X, enforces normalization form D (NFD).