'If' 和 'Else' 都在我的 Windows 批处理文件中执行 [关闭]答案

【问题标题】：Both 'If' and 'Else' are executed in my windows batch file [closed]'If' 和 'Else' 都在我的 Windows 批处理文件中执行 [关闭]
【发布时间】：2021-05-08 08:53:27
【问题描述】：

当我尝试执行以下批处理文件时，会创建文件夹 （从用户：文件夹名称读取输入），但 else 步骤也正在执行，显示错误消息。

Enter a folder name:abc
abc created succesfully
'else' is not recognized as an internal or external command,
operable program or batch file.
abc already exist, choose other name
Press any key to continue . . .

代码有什么问题？

@Echo Off
SETLOCAL ENABLEDELAYEDEXPANSION
@color 0a
cls

set "dest=D:\auto\Practice_3\destination"
set /p foldername=Enter a folder name:
set folder_date=%DATE:/=%
SET dirname="%folder_date:~8,4%_%folder_date:~6,2%_%folder_date:~4,2%"

mkdir %dest%\%USERNAME%\%dirname%

if not exist "%dest%\%USERNAME%\%dirname%\%foldername%" (
    mkdir %dest%\%USERNAME%\%dirname%\%foldername%
    echo %foldername% created succesfully
)
else (
    echo %foldername% already exist, choose other name
    pause
    exit
)
echo Listed files in file_list.txt are being copied ... 
echo Please wait ...
for /f %%f in (file_list.txt) do (

    for /f "tokens=*" %%F IN ('dir /S /B /A:-D "%%f"') Do (
                copy "%%F" "%dest%\%USERNAME%\%dirname%\%foldername%"       
    )
)
echo Backup done for listed files in file_list.txt
echo Tst and env files are being copied ...
echo Please wait ...

Set py_scripts="Python_Scripts"
mkdir %dest%\%USERNAME%\%dirname%\%foldername%\%py_scripts%
for /R %%f in (*.py) do copy %%f "%dest%\%USERNAME%\%dirname%\%foldername%\%py_scripts%"

pause

ENDLOCAL

【问题讨论】：

在IF 命令的帮助文件中，清楚地描述了使用ELSE 的正确语法用法。我不确定您在哪里找到了一个工作代码示例，其中括号与ELSE 不同。

标签： if-statement batch-file

【解决方案1】：

答案在您随问题发布的错误输出中：

'else' is not recognized as an internal or external command,

else 必须与If 命令的右括号位于同一行。

) Else (

【讨论】：