This is a very simple script, so don't expect something great.

You can change it, distribute, do whatever you like, I don't mind.
But if you improve it, you could share it back ;)

To use, you have to export variables to use aws-cli, like `AWS_PROFILE`, `AWS_DEFAULT_REGION`, etc. Then just call the script using `watch` (or however you like) and giving the RDS instance name:
 
    watch ./rds-top.sh <your instance name>

Before using it, you need to enable enhanced monitoring on your RDS instance.