远程服务器端口是否开放(审计)

#!/bin/bash

for i in `awk ‘{print $1}‘ iplist`;
do 
    if [[ $(nmap $i -p 22 |grep open|grep -v grep|wc -l) -eq 1 ]];then
        echo $i 22 is up.
    else
        echo $i 22 is down.
    fi;
done

for i in `awk ‘{print $1}‘ iplist`;
do 
    if [[ $(nmap $i -p 80 |grep open|grep -v grep|wc -l) -eq 1 ]];then
        echo $i 80 is up.
    else
        echo $i 80 is down.
    fi;
done