Batch to detect if system is a 32-bit or 64-bit

Question

Does anybody know how to create a batch file that can shell one program if its a 64-bit system or shell another if its a 32-bit system?

Answer 1

On Linux, you can simply use "arch" at the command line.

ubuntu# arch
x86_64

On OSX (Snow Leopard), it returns "i386", even if you're on 64-bit hardware.

Answer 2

read this.

http://blogs.msdn.com/b/david.wang/archive/2006/03/26/howto-detect-process-bitness.aspx

Answer 3

It works without WMI too! I suggest:

 @echo off
 if /i "%processor_architecture%"=="AMD64" GOTO AMD64
 if /i "%PROCESSOR_ARCHITEW6432%"=="AMD64" GOTO AMD64
 if /i "%processor_architecture%"=="x86" GOTO x86
 GOTO ERR
 :AMD64
    rem do amd64 stuff
 GOTO EXEC
 :x86
    rem do x86 stuff
 GOTO EXEC
 :EXEC
    rem do arch independent stuff
 GOTO END
 :ERR
 @echo Unsupported architecture "%processor_architecture%"!
 pause
 :END