On Monday, June 11, 2012 at 7:41:09 AM UTC+8, Gabor Grothendieck wrote:   
   > Is there some way of finding out in a batch file if it was invoked from a 32   
   bit or 64 bit cmd.exe ?  My preference is to be able to do this without using   
   external utilities, if possible. Thanks.   
      
   I use the following command on my 64bit version of windows 10 (havn't tested   
   on 32bit operating system), *check_process_bits.bat*:   
      
   ```bat   
   IF EXIST "%windir%\Sysnative\cmd.exe" (ECHO proc32_on_win64) ELSE ECHO   
   proc64_on_win64 or proc32_on_win32   
   ```   
      
   * Hold `Win+R` to open 32bit "%windir%\SysWOW64\cmd.exe", copy and paste the   
   above commandline  or run *check_process_bits.bat*, it outputs:    
   proc32_on_win64*   
   * Hold `Win+R` to open 64bit "%windir%\System32\cmd.exe", copy and paste the   
   above commandline or run *check_process_bits.bat*, it outputs: *   
   roc64_on_win64 or proc32_on_win32*   
      
   Considering the 32-bit OS, we can use [batch file to check 64bit or 32bit   
   OS](https://stackoverflow.com/questions/12322308/batch-file-to-c   
   eck-64bit-or-32bit-os#24590583)   
   > ```bat   
   > @echo OFF   
   >   
   > reg Query "HKLM\Hardware\Description\System\CentralProcessor\0" | find /i   
   "x86" > NUL && set OS=32BIT || set OS=64BIT   
   >   
   > if %OS%==32BIT echo This is a 32bit operating system   
   > if %OS%==64BIT echo This is a 64bit operating system   
   > ```   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)