Is there a simple UNIX command for finding out how many cores I have to work with?

Question

I've got an Ubuntu VM on my Mac. Is there a command I can run in Ubuntu that will tell me how many cores I have to work with?

I could do "about this mac" on the host, but I'm not sure how well the multi-core processor would translate to the VM.

Answer 1

This should work:

grep -c processor /proc/cpuinfo

or

lshw -class processor -short

Answer 2

This command will do the job: dmesg | grep cpu