netstat: option requires an argument -- p
usage: netstat [-AaLnSW] [-f protocol_family | -p protocol]
[-M core] [-N system]
netstat -i | -I interface [-abdhntW] [-f address_family]
[-M core] [-N system]
netstat -w wait [-I interface] [-d] [-M core] [-N system]
netstat -s [-s] [-z] [-f protocol_family | -p protocol]
[-M core] [-N system]
netstat -i | -I interface -s [-f protocol_family | -p protocol]
[-M core] [-N system]
netstat -m [-M core] [-N system]
netstat -B [-I interface]
netstat -r [-AanW] [-f address_family] [-M core] [-N system]
netstat -rs [-s] [-M core] [-N system]
netstat -g [-W] [-f address_family] [-M core] [-N system]
netstat -gs [-s] [-f address_family] [-M core] [-N system]