DNS拨测shell脚本

Version:20180419

#!/bin/bash
###############DNS拨测脚本      V1      20180419
###############By PlatoWG
##备份原resolv.conf文件
/bin/cp /etc/resolv.conf /etc/resolv.conf.back
##脚本主体
success=0
fail=0
read -p "请输入拨测次数:" num
echo "nameserver 114.114.114.114" > /etc/resolv.conf
for i in `seq 1 $num`
  do
        NO=`curl -I  http://www.caict.ac.cn/|grep -w HTTP|grep -w HTTP|awk '{print $2}'` &> /dev/null
        clear;echo "第${i}次拨测,HTTP返回状态$NO"
        if [ $NO -eq 200 ];then
                let success+=1 ;else
                let fail+=1
        fi
        sleep 0.1
  done
clear;echo "拨测完成，拨测结果如下:"
echo 共拨测成功${num}次
echo 拨测成功${success}次
echo 拨测失败${fail}次
rm -rf /etc/resolv.conf
mv /etc/resolv.conf.back /etc/resolv.conf

Version：20180421 增加回显拨测起止时间；增加自定义拨测DNSIP，拨测域名，拨测次数；增加回显拨测信息确认

#!/bin/bash
###############DNS拨测脚本      V1      20180419
###############By PlatoWG
##备份原resolv.conf文件
/bin/cp /etc/resolv.conf /etc/resolv.conf.back
##脚本主体
success=0
fail=0
read -p "请输入DNSIP:" dns
read -p "请输入拨测次数:" num
read -p "请输入拨测域名:" domain
echo "nameserver $dns" > /etc/resolv.conf

echo -e "请确认拨测信息:DNSIP:$dns \n拨测次数:$num \n拨测域名:$domain"
read -p "请输入y/n确认信息" confirm
if [ $confirm != "y" ];then
        exit 0
fi

begin_time=`date "+%F %T"`

for i in `seq 1 $num`
  do
        NO=`curl -I  $domain|grep -w HTTP|grep -w HTTP|awk '{print $2}'` &> /dev/null
        clear;echo "第${i}次拨测,HTTP返回状态$NO"
        if [ $NO -eq 200 ];then
                let success+=1 ;else
                let fail+=1
        fi
        sleep 0.1
  done

end_time=`date "+%F %T"`

clear;echo "拨测完成，拨测结果如下:"
echo "拨测时间:$begin_time--$end_time"
echo 共拨测成功${num}次
echo 拨测成功${success}次
echo 拨测失败${fail}次
rm -rf /etc/resolv.conf
mv /etc/resolv.conf.back /etc/resolv.conf