写一个获取 ip 访问量的shell脚本

#!/bin/bash

for((i=3;i++;i>1))
do

catip=(`netstat -ano | grep tcp | grep -v -E "127.0.0.1|100.100|0.0.0.0" | grep -v ":::"| awk -F" " '{print $5}' | sort | uniq -c | awk -F" " '{print $2}' | awk -F":" '{print $1}'`); echo ${catip[*]}

      for j in ${catip[*]}
        do
         catiptxt=$(cat 2.txt | grep $j | wc -l)
           if [ $catiptxt -lt 1 ]
              then
                  echo $j >> 2.txt
                  echo $j "==========================》已经成功写入文件"
              else
                  echo "IP : $j 已经存在"
           fi


        done
sleep 1
done