【脚本】修改wireguard端口

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#!/bin/bash
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PORT=0
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#判断当前端口是否被占用，没被占用返回0，反之1
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function Listening {
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   TCPListeningnum=`netstat -an | grep ":$1 " | awk '$1 == "tcp" && $NF == "LISTEN" {print $0}' | wc -l`
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   UDPListeningnum=`netstat -an | grep ":$1 " | awk '$1 == "udp" && $NF == "0.0.0.0:*" {print $0}' | wc -l`
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   (( Listeningnum = TCPListeningnum + UDPListeningnum ))
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   if [ $Listeningnum == 0 ]; then
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       echo "0"
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   else
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       echo "1"
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   fi
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}
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#指定区间随机数
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function random_range {
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   shuf -i $1-$2 -n1
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}
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#得到随机端口
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function get_random_port {
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   templ=0
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   while [ $PORT == 0 ]; do
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       temp1=`random_range $1 $2`
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       if [ `Listening $temp1` == 0 ] ; then
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              PORT=$temp1
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       fi
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   done
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}
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get_random_port 9000 10000  # 9000 ~ 10000 端口
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wg set wg0 listen-port $PORT