代码如下
@echo off
if "%PROCESSOR_ARCHITECTURE%" == "AMD64" (
echo OS is 64bit
) ELSE IF "%PROCESSOR_ARCHITEW6432%" == "AMD64" (
echo OS is 64bit
) ELSE (
echo OS is 32bit
)
pause
知识点：
The general idea is to check the following environment variables:
- PROCESSOR_ARCHITECTURE – reports the native processor architecture EXCEPT for WOW64, where it reports x86.
- PROCESSOR_ARCHITEW6432 – not used EXCEPT for WOW64, where it reports the original native processor architecture.
| Environment Variable Program Bitness | 32bit Native | 64bit Native | WOW64 |
| PROCESSOR_ARCHITECTURE | x86 | AMD64 | x86 |
| PROCESSOR_ARCHITEW6432 | undefined | undefined | AMD64 |