Usage: python pscan.py [OPTION]... Implementing Port Scanning -p specify the port of the IP/DNS scan,default full port scan python pscan.py 8.8.8.8 python pscan.py 8.8.8.8 -p 21,80 -n specified thread scan python pscan.py 8.8.8.8 -p 21,80 -n 50 -r specified file scan python pscan.py 8.8.8.8 -r 1.txt