阿里云外网服务器如何获得外网IP。

看这里

#Function: gtIp
#Author: zhangjianxin
#Time: 2018-08-30
#! /bin/bash


bashpath=$(cd `dirname $0`; pwd)
brokerName=dev_rocketmq_4.3.0
#########################setting#######################
URL="http://ip.cn/"
Result=`curl -o /dev/null -s -m 10 --connect-timeout 10 -w %{http_code} $URL`
Test=`echo $Result`
if [ "$Test" == "200" ]
then
    curl -s -o $bashpath/ip.html ${URL}
    echo "search inter ip "
        ip=$(cat ${bashpath}/ip.html  | sed  's/：/ /g' | awk '{print$3}')
    echo $ip
    rm ${bashpath}/ip.html
fi

    awk '!seen[$0]++' <filename> # 去重行

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