public function run($cmd)
    {
        $cmd = "{$this->phpBinaryPath} {$this->file} $cmd";
        $cmd = $this->isWindows() === true
            ? $cmd = "start /b {$cmd}"
            : $cmd = "{$cmd} > /dev/null 2>&1 &";

        pclose(popen($cmd, 'r'));

        return true;
    }