curl -sL -w "%{http_code}\\n" "http://www.google.com/" -o /dev/null
-s= Silent cURL’s output-L= Follow redirects-w= Custom output format-o= Redirects the HTML output to/dev/null
Example:
[~]$ curl -sL -w "%{http_code}\\n" "http://www.google.com/" -o /dev/null
200
I would probably remove the \\n if I were to capture the output.