42 lines
1.4 KiB
Bash
42 lines
1.4 KiB
Bash
#!/bin/bash
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# 使用 dig 命令查询 DNS 记录并写入 ip.txt
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dig cf.youoffer.net A +short > ip.txt
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# 创建一个新的文件 ip_use.txt
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touch ip_use.txt
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# 读取 ip.txt 中的每个 IP 地址进行下载测试
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while IFS= read -r ip
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do
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echo "Starting download test for $ip"
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# 使用 curl 命令进行下载测试
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start_time=$(date +%s.%N)
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curl -s --resolve speed.cloudflare.com:443:"$ip" https://speed.cloudflare.com/__down?bytes=10000000 -o /dev/null --connect-timeout 5 --max-time 10
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curl_status=$?
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end_time=$(date +%s.%N)
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elapsed_time=$(echo "$end_time - $start_time" | bc)
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# 检查 curl 命令的返回状态
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if [ $curl_status -eq 0 ]; then
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# 计算下载速度
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download_speed=$(echo "scale=2; (10000000*8)/(($elapsed_time)*1000000)" | bc)
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# 显示下载速度
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echo "$ip has a download speed of $download_speed Mbps"
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# 如果下载速度大于等于 50Mbps
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if (( $(echo "$download_speed >= 50" | bc -l) )); then
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# 将大于等于 50Mbps 的 IP 写入 ip_use.txt
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echo "$ip" >> ip_use.txt
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fi
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else
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echo "Download test for $ip failed with status $curl_status"
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fi
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done < ip.txt
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# 重命名 ip_use.txt 为 final_ips.txt，因为 ip_use.txt 在循环中被touch过，可能包含旧数据
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mv ip_use.txt final_ips.txt
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echo "Download tests completed. IPs with download speed >= 50Mbps are written to final_ips.txt"
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