I wanted to check if the service I am trying to access on a server is actually listening on the port I am hitting. I tried to look for a ping variant which could tell me if the port is listening and required service is up and running.
Found nmap command as answer.
nmap -p 80 google.com
Starting Nmap 6.40 ( http://nmap.org ) at 2016-03-02 16:05 IST
Nmap scan report for google.com (126.96.36.199)
Host is up (0.050s latency).
rDNS record for 188.8.131.52: maa03s21-in-f14.1e100.net
PORT STATE SERVICE
80/tcp open http
It checks the port state and also what service is listening at the port.