新增window系统批处理脚本

[willasas]

1. 将下面代码保存为sethost.bat文件；

@echo off
setlocal

:: 设置 PowerShell 脚本编码为 UTF-8
set "PSModulePath=%PSModulePath%;%SystemRoot%\System32\WindowsPowerShell\v1.0\Modules"

:: 下载 hosts 文件并指定编码为 UTF-8
powershell -Command "[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.SecurityProtocolType]::Tls12; $webClient = New-Object System.Net.WebClient; $webClient.Encoding = [System.Text.Encoding]::UTF8; $webClient.DownloadFile('https://raw.hellogithub.com/hosts', '%temp%\hosts.txt')"

:: 检查是否下载成功
if not exist "%temp%\hosts.txt" (
    echo 下载 hosts 文件失败。
    pause
    exit /b 1
)

:: 使用 PowerShell 将内容追加到 C:\Windows\System32\drivers\etc\hosts 并指定编码为 UTF-8
powershell -Command "$hostsContent = Get-Content -Path '%temp%\hosts.txt' -Encoding UTF8; Add-Content -Path 'C:\Windows\System32\drivers\etc\hosts' -Value $hostsContent -Encoding UTF8"

:: 刷新 DNS 缓存
ipconfig /flushdns

:: 删除临时文件
del "%temp%\hosts.txt"

:: 等待3秒后关闭命令行窗口
timeout /t 3 /nobreak >nul

endlocal

2. 以管理员身份运行上面的bat脚本即可；
3. 注意，host中的文件地址用的是这个https://raw.hellogithub.com/hosts

[Marcus737]

会把前一次执行的内容删除后再添加新的吗

[Jackson888888]

这个是定时自动更新，还是需要手动更新？

[Ded-calm]

会把前一次执行的内容删除后再添加新的吗

实测不会，无限追加

[zhangweildlh]

可以删除旧内容，添加新内容的批处理。

@echo off
:: 这是一个Win系统下自动从GitHub520下载镜像IP，添加 / 更新到系统Host文件中的脚本。请放在“C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup”文件夹中。

setlocal enabledelayedexpansion

:: ---------- 管理员权限检查（最终修正）----------
echo. 2>&1 > nul
if %errorlevel% neq 0 (
echo 请右键以管理员身份运行此脚本!
pause
exit /b 1
)

:: ---------- 定义关键路径 ----------
set "HOSTS_PATH=%windir%\System32\drivers\etc\hosts"
set "TEMP_HOSTS=%temp%\github520_hosts.txt"

if exist "%TEMP_HOSTS%" del /q "%TEMP_HOSTS%" >nul 2>&1

:: ---------- 下载hosts文件 ----------
powershell -Command "[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.SecurityProtocolType]::Tls12; $webClient = New-Object System.Net.WebClient; $webClient.Encoding = [System.Text.Encoding]::UTF8; $webClient.DownloadFile('https://raw.hellogithub.com/hosts', '%TEMP_HOSTS%')"

if not exist "%TEMP_HOSTS%" (
echo 错误：下载 hosts 文件失败
pause
exit /b 1
)

:: ---------- 时间戳比对（修正版）----------
set "needs_update=0"
set "new_timestamp="

for /f "tokens=1,* delims==" %%a in ('powershell -Command "$newContent = [IO.File]::ReadAllText('%TEMP_HOSTS%', [Text.Encoding]::UTF8); if ($newContent -match '# Update time: (\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}[+-]\d{2}:\d{2})') { try { $newDate = [DateTime]::ParseExact($matches[1], 'yyyy-MM-ddTHH:mm:sszzz', $null); $hostsContent = try { [IO.File]::ReadAllText('%HOSTS_PATH%', [Text.Encoding]::UTF8) } catch { '' }; $needs_update = 1; if ($hostsContent -match '(?s)# GitHub520 Host Start.?# Update time: (\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}[+-]\d{2}:\d{2}).?# GitHub520 Host End') { $oldDate = [DateTime]::ParseExact($matches[1], 'yyyy-MM-ddTHH:mm:sszzz', $null); $needs_update = [int]($newDate -gt $oldDate) }; Write-Output ('needs_update=' + $needs_update); Write-Output ('new_timestamp=' + $matches[1]) } catch { Write-Host '时间戳格式错误: ' + $matches[1]; exit 1 } } else { Write-Host '错误：下载文件缺少有效时间戳'; exit 1 }"') do (
set "%%a=%%b"
)

:: ---------- 替换操作（修正版）----------
powershell -Command "$hostsContent = try { [IO.File]::ReadAllText('%HOSTS_PATH%', [Text.Encoding]::UTF8) } catch { '' }; $newContent = [IO.File]::ReadAllText('%TEMP_HOSTS%', [Text.Encoding]::UTF8); $pattern = '(?s)# GitHub520 Host Start.*?# GitHub520 Host End'; $updatedContent = if ($hostsContent -match $pattern) { $hostsContent -replace $pattern, '' } else { $hostsContent }; $finalContent = ($updatedContent.TrimEnd() + "rnrn" + $newContent.Trim()).Replace("rn", "n\").Replace(\"n", "rn"); try { [IO.File]::WriteAllText('%HOSTS_PATH%', $finalContent, [Text.Encoding]::UTF8) } catch { Write-Host '写入失败：请检查杀毒软件设置'; exit 1 }" || (
echo 更新失败，已恢复备份文件
copy "%HOSTS_PATH%.bak" "%HOSTS_PATH%" >nul 2>&1
exit /b 1
)

ipconfig /flushdns >nul
del "%TEMP_HOSTS%" "%HOSTS_PATH%.bak" >nul 2>&1

echo 操作完成！最新更新日期：%new_timestamp%
timeout /t 5 /nobreak >nul
endlocal
exit 0