NMap

# nmap 10.10.10.4
# nmap -A  10.10.10.4
# nmap -sV -sC -p- 10.10.10.4
# nmap -sU 10.10.10.4
    -sV : Attempts to determine the version of the service running on port
    -sC : Scan with default NSE scripts. Considered useful for discovery and safe
    -A  : Enables OS detection, version detection, script scanning, and traceroute
    -p- : Port scan all ports
    -sU : UDP ports (very slow)
    -oN nmap.log : output file