private function addFileIntoMountPoint($mountpoint, $fileToInsert, $outputFile = null)
{
if ($outputFile != null) {
passthru('sed -e \'/' . $mountpoint . '/r' . $fileToInsert . '\' ' . $this->laravel_services_file . ' > ' . $outputFile, $error);
} else {
passthru('sed -i \'/' . $mountpoint . '/r' . $fileToInsert . '\' ' . $this->laravel_services_file, $error);
}
return $error;
}