Perform a fast scan with -F option to scans for the ports listed in the nmap-services files and leaves all other ports.
sudo nmap -F 192.168.1.69
result:
Starting Nmap 6.40 ( http://nmap.org ) at 2016-07-08 00:41 BST Nmap scan report for peter-laptop-1 (192.168.1.69) Host is up (0.0000090s latency). Not shown: 97 closed ports PORT STATE SERVICE 80/tcp open http 139/tcp open netbios-ssn 445/tcp open microsoft-ds Nmap done: 1 IP address (1 host up) scanned in 2.27 seconds
This scan is faster than a normal scan because it uses the aggressive timing template and scans fewer ports.
sudo nmap -T4 -F 192.168.1.69
result:
Starting Nmap 6.40 ( http://nmap.org ) at 2016-07-08 01:59 BST Nmap scan report for peter-laptop-1 (192.168.1.69) Host is up (0.0000060s latency). Not shown: 97 closed ports PORT STATE SERVICE 80/tcp open http 139/tcp open netbios-ssn 445/tcp open microsoft-ds Nmap done: 1 IP address (1 host up) scanned in 1.87 seconds