How to scan a rage of Ip adresses on port 22

The following article describes how to scan a rage of Ip adresses on port 22

Scan all ports 22 for 192.168.1.* then grep for ip adresses only:

nmap –open -p22 192.168.1.* | grep ‘[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}’