Response time

• curl -so /dev/null -w '%{time_total}\n' https://google.com

while true; do 
   echo "Time_total"; 
   curl -so /dev/null -w '%{time_total}\n' test.wikieduonline.com | awk '{printf "%.0f ms\n", $1 * 1000}';
   echo -n "HTTP Code: ";
   curl -so /dev/null -w '%{http_code}\n' test.wikieduonline.com;
   sleep 1; 
done

• Track HTTP Application Response time in Nginx

See also

• List of HTTP status codes, 3XX, 4XX, 5XX, 503, HTTP response status code

https://stackoverflow.com/questions/12714584/wget-time-measurement