How can I use linux CLI version on single terminal and sub/pub?

[Flithor]

I use command mqttx sub -t 'topic' to subscribe the topic and cannot use publish command in interactive?

[Red-Asuka]

The sub and pub commands cannot be used simultaneously on a single terminal. You can use terminal multiplexers such as screen or tmux to create multiple windows and panels, and switch between these windows and panels.

[Red-Asuka]

Some SSH clients, such as PuTTY or MobaXterm, provide options to open multiple SSH sessions in the same application window. Each session has its own label or window, and you can easily switch between them.

[Flithor]

OK, I see