netstat -na|grep ESTABLISHED|awk '{print $5}'| awk -F: '{print $1}'|sort|uniq -c| sort -r +0n

netstat -n | awk '/^tcp/ {++state[$NF]} END {for(key in state) print key,"\t",state[key]}'

netstat -anlp|grep 80|grep tcp|awk '{print $5}'|awk -F: '{print $1}'|sort|uniq -c|sort -nr|head -n20

ip addr show eth0 | grep inet | awk '{ print $2; }' | sed 's/\/.*$//'