PhpBrew\Process::getOutput PHP Method

    public function getOutput()
    {
        return $this->stdout;
    }

 protected function detectProcessorNumberByGrep()
 {
     if (Utils::findBin('grep') && file_exists('/proc/cpuinfo')) {
         $process = new Process('grep -c ^processor /proc/cpuinfo 2>/dev/null');
         $process->run();
         $this->processorNumber = intval($process->getOutput());
         return $this->processorNumber;
     }
     return null;
 }