$host = $argv[1];
$path = $argv[2];
$folder = $argv[3];

if (empty($host) || empty($path)) {
	echo "usage: php {$argv[0]} <host> <path> [<folder>]\n";
	echo "       php {$argv[0]} example.com /folder\n";
	echo "       php {$argv[0]} example.com /folder../../\n";
	exit;