public function execute()
    {
        $build = $this->phpci->buildPath;

        if ($this->directory == $build || empty($this->directory)) {
            return true;
        }
        if (is_dir($this->directory)) {
            $cmd = 'rm -Rf "%s"';
            if (IS_WIN) {
                $cmd = 'rmdir /S /Q "%s"';
            }
            return $this->phpci->executeCommand($cmd, $this->directory);
        }
        return true;
    }