一個用於拷貝文件並判斷是否拷貝成功的批處理文件

@echo off
chcp 65001
copy E:\opencv\build\x64\vc15\bin\opencv_videoio_ffmpeg420_64.dll %windir%
set "err=%ERRORLEVEL%"
IF "%err%"=="1" goto :FAIL
echo 拷貝文件"opencv_videoio_ffmpeg420_64.dll"至“%windir%”成功！
copy E:\opencv\build\x64\vc15\bin\opencv_world420d.dll %windir%
set "err=%ERRORLEVEL%"
IF "%err%"=="1" goto :FAIL
echo 拷貝文件"opencv_world420d.dll"至“%windir%”成功！
copy E:\opencv\build\x64\vc15\bin\opencv_world420.dll %windir%
set "err=%ERRORLEVEL%"
IF "%err%"=="1" goto :FAIL
echo 拷貝文件"opencv_world420.dll"至“%windir%”成功！
goto :SUCCESS
:FAIL
echo 拷貝文件至“%windir%”失敗，請嘗試以管理員身份運行並確認是否有足夠權限！
del e:\opencv\setup.bat
:SUCCESS
echo 安裝成功，按任意鍵繼續……
PAUSE
del e:\opencv\setup.bat