Nmap - CloudCommandos/JohnChan GitHub Wiki
Assume target is online (-Pn), get server version (-sV) of target (10.0.1.11) at port 80 (-p80)
nmap -Pn -sV -p80 10.0.1.11Intensity (-T<1-5>)
Enable OS detection, version detection, script scanning, and traceroute (-A)
Useful Links:
Nmap Cheat Sheet
Nmap Tutorial