Check OS 32bits and 64bits as a condition to run part of a batch or script

There are example for this checking:

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If Exist "C:\Program Files (x86)\" goto X64

start /MAX C:\PROGRA~1\INTERN~1\IEXPLORE.EXE http://www.google.com

 

:X64

If NOT EXIST "C:\Program Files (x86)\" goto END

start /MAX "C:\PROGRA~1 (x86)\INTERN~1\IEXPLORE.EXE" http://www.google.com

:END

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Check OS 32bits and 64bits as a condition to run part of a batch or script