Question

我有以下代码段：

   @echo off 

for %%d in (c d e f g h i j k l m n o p q r s t u v w x y z) do (
  if exist "%%d:\Program Files (x86)\location\folder" (
    cd /d "%%d:\Program Files (x86)\location\folder"
  ) else cd /d "%%d:\location\folder\" 2>nul && goto :break

)

::display error message if folder not found
:break
if %errorlevel% equ 0 (
    echo "Folder found, going to folder location"
) else (
    set /p location=Could not find folder. Please enter folder location: 
    cd %location%
    echo %location%
)

出于某种原因，当我把它放到CD的位置时，它第一次将CD送到错误的文件位置。如果我从同一命令行再次运行代码片段，它将CD转到先前给定的文件位置。这可能是什么原因？

Answer 1

您需要delayed expansion：

::display error message if folder not found
:break
setlocal enableDelayedExpansion
if %errorlevel% equ 0 (
    echo "Folder found, going to folder location"
) else (
    set /p location="Could not find folder. Please enter folder location: "
    cd /d "!location!"
)

如果有机会跳跃，可以更好地使用带/d开关的cd

编辑试试这个（未经测试）：

   @echo off 

for %%d in (c d e f g h i j k l m n o p q r s t u v w x y z) do (
  if exist "%%d:\Program Files (x86)\location\folder" (
    cd /d "%%d:\Program Files (x86)\location\folder"
  ) else (
    cd /d "%%d:\location\folder\" 2>nul && goto :break
  )

)


for %%d in (c d e f g h i j k l m n o p q r s t u v w x y z) do (
  if exist "%%d:\Program Files (x86)\location\folder" (
    cd /d "%%d:\Program Files (x86)\location\folder"
    goto :break
  )
)

for %%d in (c d e f g h i j k l m n o p q r s t u v w x y z) do (
  if exist "%%d:\location\folder\" (
    cd /d "%%d:\location\folder\"
    goto :break
  )
)

:retry
set /p "location=Could not find folder. Please enter folder location: "
cd /d "%location%"  2>nul || (
  echo wrong location
  echo try again
  goto :retry
)
echo %location%
goto :break



::display error message if folder not found

echo "Folder found, going to folder location"

exit /b 0

批处理脚本CD到错误的文件位置

1 个答案: