Is there a simple way to script using either a terminal client (putty, teraterm, etc.) or Prime Infrastructure whereby I could set up a set of commands to be run at a certain interval?
Yes you can.
The easiest method is to use console. You can knock up a script to run the command at specific intervals and log the outputs. If you do this, you must ensure the console timeout is expanded.
Another option is to create a PERL script (using KRON) to telnet/SSH into the appliance and run the command and retrieve the results.