How to use internal variable in tmux send-keys command?

Question

Is there any way can let me do things like bind-key b send-keys "stty cols #{pane_width} rows #{pane_height}"

0. I use TMUX.
1. I often need to use ssh to login to CentOS servers which has no resize command.
2. I cannot install command in those servers.
3. The server's stty cannot auto resize when I resize the pane of tmux or the window of terminal.

---

I am now using a complicated way to accomplish this.

I write a display commend in my .tmux.conf, bind-key b display -p "stty cols #{pane_width} rows #{pane_height}".

Then I can copy the display-message and paste it to the command line of ssh-server.

Answer 1

You can get the variables interpolated using run-shell, eg:

bind-key b run-shell 'tmux send-keys "stty cols #{pane_width} rows #{pane_height}" Enter'