/**
* Calcuates crontab command
*
* @param Crontab $crontab
*
* @return string
*/
protected function crontabCommand(Crontab $crontab)
{
$cmd = $this->getCrontabExecutable();
if ($crontab->getUser()) {
$cmd .= sprintf(' -u %s ', $crontab->getUser());
}
return $cmd;
}