On Microsoft Windows OS, at the command prompt, I issue the command ipconfig /flushdns to flush out the DNS resolver cache.
On Ubuntu 12.10, what is the corresponding command?
You do that by restarting nscd
To install nscd Just press Ctrl+Alt+T on your keyboard to open Terminal. When it opens, run the command below:
sudo apt-get install nscd
To flush DNS Cache do:
sudo /etc/init.d/nscd restart