windows host新增bat脚本

有些时候教用户本地修改host，遇到权限不足的问题，让他改权限跟下载编辑器都十分麻烦，
于是这个脚本诞生了，方便新增host指向

复制并保存为 changehost.bat 用管理员权限打开即可

@echo off
chcp 65001 >nul
setlocal enabledelayedexpansion

REM Check for administrator privileges
>nul 2>&1 "%SystemRoot%\system32\cacls.exe" "%SystemRoot%\system32\config\system"
if '%errorlevel%' NEQ '0' (
    echo 请以管理员身份运行此脚本.
    pause
    goto :eof
)

REM Get user input for IP address and domain
set /p addentry="请输入IP地址和域名（例如：127.0.0.1 xiadmin.com）: "

REM Display the entry and confirm addition
echo 您输入的条目为: %addentry%
set /p confirm="确认添加到hosts文件吗?(Y/N): "
if /I "%confirm%" NEQ "Y" (
    echo 操作已取消
    goto :eof
)

REM Set the path to the hosts file
set hostspath=%SystemRoot%\System32\drivers\etc\hosts

REM Check if the entry already exists in the hosts file
findstr /c:"%addentry%" %hostspath% >nul
if %errorlevel% EQU 0 (
    echo 条目已存在于hosts文件中
    goto :eof
)

REM Prepare temp file and append the entry to the hosts file with a new line
set tempfile=%TEMP%\hosts_temp.txt

copy /Y %hostspath% %tempfile% >nul
(
    echo.
    echo %addentry%
) >> %tempfile%

REM Replace original hosts file with temp file
copy /Y %tempfile% %hostspath% >nul
if %errorlevel% EQU 0 (
    echo 已成功添加到hosts文件
) else (
    echo 添加到hosts文件失败
    del %tempfile%
    goto :eof
)

REM Clean up temp file
del %tempfile%

pause
endlocal
goto :eof