Remove all uses of the `register' keyword
-rm: add support for a -I option, like that from FreeBSD's rm.
+rm: add support for a -I option, like that from FreeBSD's rm:
+ -I Request confirmation once if more than three files are being
+ removed or if a directory is being recursively removed. This
+ is a far less intrusive option than -i yet provides almost
+ the same level of protection against mistakes.