How check the availability of specific types of ec2 by availability zone?

Thanks for replying, but actually I wanted a command that would show me the amount not only that there is a certain type of instance.

Yes, there are some examples including CLI commands described here

When I try to launch p2.xlarge, I sometimes get:

We currently do not have sufficient p2.xlarge capacity in the Availability Zone you requested (us-east-1b). Our system will be working on provisioning additional capacity. You can currently get p2.xlarge capacity by not specifying an Availability Zone in your request or choosing us-east-1a, us-east-1c, us-east-1d, us-east-1e.

However, there's no way in the console to remove the availability zone, just to change it, and then I need to try one by one... How to solve it?