Detect Windows Server version 32/64-bit in CLI

What's the best and quickest way to detect whether you're running a 32 or 64-bit version of Windows Server from the command line?

(Cygwin is installed)

Solution 1:

A slightly quicker way would be to check for the existence of the %ProgramFiles(x86)% directory. If it exists then you're running 64-bit, if it doesn't exist then you're running 32-bit.

Quick one-liner:

if exist "%ProgramFiles(x86)%" echo 64-bit

That will output 64-bit if the directory exists. That would fail, though, if it didn't exist as a variable but it did exist as a directory (as %ProgramFiles(x86)%).

You can also use the find tool to have a more accurate way to determine bitness.

set | find "ProgramFiles(x86)"

or using the systeminfo command previously

systeminfo | find /I "System type"

(included the /I to work across XP/2003/2008/etc)

Solution 2:

How about:

echo %PROCESSOR_ARCHITECTURE%

This will return x86 on 32-bit systems and AMD64 (or IA64) on 64-bit systems.