public function execute(PhutilArgumentParser $args)
{
$console = PhutilConsole::getConsole();
$engines = PhabricatorFile::buildAllEngines();
if (!$engines) {
throw new Exception('No storage engines are available.');
}
foreach ($engines as $engine) {
$console->writeOut("%s\n", $engine->getEngineIdentifier());
}
return 0;
}
