How to tell Windows x32 or x64 in Commandline

[dindog]

in pseudo code:

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if OS=x64 then
      do A
else OS = x32
      do B
end

[Vochomurka]

May be

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if exist %systemroot%\syswow64\*.* ...

[Dalai]

The most reliable way (IMO):

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if not "%ProgramFiles(x86)%"=="" (
  Do 64 bit stuff here
) ELSE (
  Do 32 bit stuff here
)

Oops, sorry, I misunderstood. I thought you wanted to know whether your script is running in a 32 or 64 bit CMD. Instead, you want to know whether the system your script runs on is 32 or 64 bit. You could use something like this:

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if exist %SystemRoot%\SysWOW64\*.* (
  you're on a x64 system
) ELSE (
  you're on a 32 bit system
)

Regards
Dalai

[LonerD]

I use such .bat for some time:

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IF EXIST "%ProgramFiles(x86)%" (
  Start /Wait CCleaner64.exe
) Else (
   Start /Wait CCleaner.exe
)

Now it not necessary to do it in total with scripts.
Plugin Autorun has environment variables with OS bits, TC bits and many others

[beb]

this is my version (.bat/.cmd):

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@echo off
@echo Detecting OS Bitness
cls
IF "%PROCESSOR_ARCHITECTURE%"=="x86" set xOS=x86
IF "%PROCESSOR_ARCHITECTURE%"=="AMD64" set xOS=x64
IF "%PROCESSOR_ARCHITEW6432%"=="AMD64" set xOS=x64
echo xOS=%xOS%
pause

Gives 100% result running from both 32 or 64bit Total Commander (or from anywhere else) since W7x64, W8x64, W8.1x64 till W10x64.

NB

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Environment Variable \ Program Bitness	32bit Native	64bit Native	WOW64
PROCESSOR_ARCHITECTURE          			x86		      AMD64		    x86
PROCESSOR_ARCHITEW6432          			undefined	   undefined	   AMD64