You need to run on a separate process for producer and consumer (on the same 
machine is fine). 

Read it here for simple CLI consumer, e.g. 
https://www.conduktor.io/kafka/kafka-consumer-cli-tutorial/ 

> On 20. Aug 2024, at 14:15, Keith Brown <keith6...@gmail.com> wrote:
> 
> I am new to kafka. I started the server and created a topic.
> 
> Using the CLI, is it possible to send AND receive the message and
> exit? Or do I need to have a separate process for it?

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