Craft\ImagerService::executeOptimize PHP Method

    public function executeOptimize($command, $file = '')
    {
        $command = escapeshellcmd($command);
        $r = shell_exec($command);
        if ($this->getSetting('logOptimizations')) {
            ImagerPlugin::log("Optimized image {$file} \n\n" . $r, LogLevel::Info, true);
        }
    }