#ex_13-2
#Learning Perl, Appendix A, Exercise 13.2
($old, $new) = @ARGV; # name them
if (-d $new) { # new name is a directory, need to patch it up
		($basename = $old) =~ s#.*/##; # get basename of $old
		$new .= "/$basename"; # and append it to new name
}
rename($old,$new);