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How to Clear DNS Cache in Ubuntu 12.04

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http://blog.sudobits.com – DNS – Domain Name System, is one of the core component of web that provides us human friendly domain names, mapped to computer friendly numeric address (called I.P (Internet Protocol) Address). Each time – when you visit a website – your computer/browser performs a DNS query (searching for IP address for the requested domain name (website you visit)). By default, our computer cache DNS results in order to provide fast lookup in future- and that’s really good (because it’s efficient and saves a lot of resources), but some times it creates a problem specially when (HowTos)