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缩短点怎么样

@echo off 
set /p ip=请输入IP： 
echo %ip%|findstr "^[0-9]*\.[0-9]*\.[0-9]*\.[0-9]*$">nul||goto end
(for /f "tokens=4 delims=." %%i in ("%ip%") do (
     for %%j in (%ip:.=,%) do if %%j gtr 255 goto end
))||goto end
echo 输入正确
echo. 
pause & exit
:end
echo 输入错误
pause >nul
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