[4.1.1]
+* mv and cp accept a new option: --reply={yes,no,query}; provides a consistent
+ mechanism to control whether one is prompted about certain existing
+ destination files. Note that cp's and mv's -f options don't have the
+ same meaning: cp's -f option no longer merely turns off `-i'.
* remove portability limitations (e.g., PATH_MAX on the Hurd, fixes for
64-bit systems)
* mv now prompts before overwriting an existing, unwritable destination file