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OK, inside of my BAT (batch) file I am trying to detect the number of physical cores of the Windows machine, then display that to the user. I am using 'wmic' which I have confirmed is working properly in a command prompt in retuning the correct information. However, when I try to display the value I have stored, it just shows a blank space.

For example, when I run this, the last line just shows "You have physical cores", and there is just a space between the word "have" and "physical", even though that's where the value of %cpuvar2% is supposed to be showing. I cannot figure out why this is not showing. I have tried with @ECHO ON as well, but no luck.

:labelCPU @ECHO OFF REM Intro message to let the user know what is happening ECHO Detecting CPU cores... REM Command to get the number of physical cores and store as a string var wmic computersystem get numberoflogicalprocessors> cpuvar REM Command to remove the first line of junk text from the returned string and save as a new var MORE +1 cpuvar> cpuvar2 REM Output the number of physical cores to the user ECHO You have %cpuvar2% physical cores!

System: Windows 10 Pro, x64

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  • Use set to set variables. > is for sending output to text files. Commented Apr 20, 2021 at 23:39
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    Where on the Internet did you see an example of storing the output of a command into a variable using redirection? You are using redirection to a file in your first WMIC command and then using the MORE command to display that file. Did you somehow think that the functionality changed with the last redirection? Commented Apr 20, 2021 at 23:51

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Here's a quick example for you to study.

@Echo Off SetLocal EnableExtensions DisableDelayedExpansion Echo Detecting CPU cores... Set "NumCores=0" For /F EOL^=N %%G In ('%SystemRoot%\System32\wbem\WMIC.exe ComputerSystem Get NumberOfLogicalProcessors 2^>NUL' ) Do For /F "Tokens=*" %%H In ("%%G") Do Set "NumCores=%%H" Echo You have %NumCores% physical cores! Pause
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