cmd查看电脑是32位还是64位

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