Use a command like this:
curl -I http://www.cnn.com
Make the process look for "Could not resolve" In that case, record the result, clear the screen, and move to the next one
Look how the response when looking for a good website and a bad one.
Use a command like this:
curl -I http://www.cnn.com
Make the process look for "Could not resolve" In that case, record the result, clear the screen, and move to the next one
Look how the response when looking for a good website and a bad one.