我有以下批处理文件从我们的服务器下载备份：

@echo off
d:
cd \DBBackups
curl -u user:password https://example.com/Backups/list.php?p=anotherpassword >list.txt
SETLOCAL DisableDelayedExpansion
FOR /F "usebackq delims=" %%a in (`"findstr /n ^^ list.txt"`) do (
    echo =========================================
    set "var=%%a"
    SETLOCAL EnableDelayedExpansion
    set "var=!var:*:=!"
    set "tmp=%%a"
    set "_tempvar=YesYes"
    if !tmp:~-3!==tar set "_tempvar=1"
    if !tmp:~-3!==bak set "_tempvar=1"
    if !_tempvar! EQU 1 (
        if exist !var! (
            echo !var! has already been downloaded
          ) else (
            echo Downloading !var!
        )
        if not exist !var! wget --no-check-certificate --user=user --password=yap https://www.example.com/Backups/!var!)
    )
    ENDLOCAL
)
c:
echo "Drive changed!"

字符串
该文件接收一个文件列表（每行一个文件）并将它们保存到list.txt。然后读取每一行并下载文件。最后，将驱动器更改回c：失败了。
我想这可能是ERRORLEVEL被设置为大于0。因此，我尝试了here提供的解决方案，包括“cmd /c”exit /B 0”"，“cd ."和“ver > nul”，但它们不起作用。最后的回声“驱动器改变了！“0打印。
欢迎任何建议。