SYNOPSIS
	int rename(string from, string to)

DESCRIPTION

	The efun rename() will move from to the new name to. If from
	is a file, then to may be either a file or a directory. If
	from is a directory, then to has to be a directory. If to
	exists and is a directory, then from will be placed in that
	directory and keep its original name.
	
	You must have write permission for from to rename the file.
	
	It is only possible to change name of a directory within a
	directory on machines running System V, i.e. it is not
	possible to move to another directory. It is not possible to
	move a directory across filesystems on any system.
	
	On successfull completion rename() will return 0. If any error
	occurs 1 is returned.

EXAMPLE
	rename("/players/wizard/obj.c", "/players/wizard/newobj.c");

SEE ALSO
	mkdir(E), rmdir(E), rm(E)