From the NannyMUD documentation

LAST CHANGE

2001-01-29

FUNCTION

NAME
        cp - Copy files.


SYNTAX
	cp  

DESCRIPTION
	cp is short for 'copy'. It copies a file to another filename (not
	neccesarily in the same dir).

	The reason for not having a fully working 'cp' command is that it is
	implemented through the very inefficient efuns write_file and
	read_file. There are no efficient primitives in the driver.