是否可以使用.bat文件验证文件扩展名？

Question

我有一个.bat文件，允许用户输入完整的文件名（完整路径），我想知道是否可以验证用户是否输入了例如.bak文件？

Answer 1

示例：

set /p "FullPathNameData=Please enter the full path name of backup file for YourBackup: "
for /f "delims=" %%a  in ("%FullPathNameData%") do set "Extension=%%~xa"
if /i "%Extension%"==".bak" (echo %FullPathNameData% is a BAK file) else %FullPathNameData% is NOT a BAK file