How do I find the Clock Speed of my Linode?

I totally understand why you would want to double check on this. The good news is that it is a simple command to find out. Just log into your Linode and run:

lscpu | grep MHz

This will pull out the current, min and max MHz of your CPU clock speed.

If you want to get a little fancier you can run:

watch -n1 "lscpu | grep 'MHz' | awk '{print $1}'"

Which will update the MHz live as your Linode runs. Since the MHz is something that varies this could help you keep track of the ups and downs.