测试系统OS X Yosemite
清理MDNS缓存
sudo discoveryutil mdnsflushcache
清理UDNS缓存
sudo discoveryutil udnsflushcaches
清理并且重置所有的DNS缓存
sudo discoveryutil mdnsflushcache;sudo discoveryutil udnsflushcaches;say OK
测试系统OS X Yosemite
MDNS缓存sudo discoveryutil mdnsflushcache
清理UDNS缓存
sudo discoveryutil udnsflushcaches
DNS缓存sudo discoveryutil mdnsflushcache;sudo discoveryutil udnsflushcaches;say OK