FOR %%a IN ("%parent:~0,-1%") DO SET grandparent=%%~dpa

响应注解的完整代码

@ECHO OFF
setlocal
SET parent=%~dp0
ECHO parent=%parent%
FOR %%a IN ("%parent:~0,-1%") DO SET grandparent=%%~dpa
ECHO grandparent=%grandparent%

试试这个：

for %%B in (%~dp0\.) do set c=%%~dpB

当Alireza的答案被应用时，这起作用。

@echo off

SET CurrentDirectory=%~dp0
echo %CurrentDirectory%
for %%B in (%CurrentDirectory%.) do set parent=%%~dpB
echo %parent%
for %%B in (%parent%.) do set grandparent=%%~dpB
echo %grandparent%

pause

echo thanks
@echo off
SET CurrentDirectory=%~dp0
echo %CurrentDirectory%
for %%B in (%CurrentDirectory%.) do set parent=%%~dpB
echo %parent%
for %%B in (%parent%.) do set grandparent=%%~dpB
echo %grandparent%
start "" msiexec /a %parent%AcroPro.msi