netstat -ltnp | grep -w :80 code example
Example: netstat -anp | grep :80 | wc -l
netstat -ant | egrep '(:80|:443) .*:.*ESTABLISHED' | awk '{print $5}' | cut -d: -f1 | sort | uniq -cnetstat -ant | egrep '(:80|:443) .*:.*ESTABLISHED' | awk '{print $5}' | cut -d: -f1 | sort | uniq -c