Find Number of CPUs and Cores per CPU using Command Prompt

You can also enter msinfo32 into the command line.

It will bring up all your system information. Then, in the find box, just enter processor and it will show you your cores and logical processors for each CPU. I found this way to be easiest.

You can use the environment variable NUMBER_OF_PROCESSORS for the total number of processors:

echo %NUMBER_OF_PROCESSORS%

Based upon your comments - your path statement has been changed/is incorrect or the path variable is being incorrectly used for another purpose.