How to send commands when opening a tmux session inside another tmux session?

Question

A typical situation may be:

$ tmux
  [0] $ ssh example.com
      $ tmux attach
        [0] $ 

I open a tmux session, then ssh in to a serve

Answer 1

EDIT:

I do NOT recommend use C-q as a bind-key, as it is a default control-key command for

un-freezes the screen and lets screen display continue

A situation happens here, and @Paschalis provides a solution:

if it happens to be twice unlucky (a remote tmux session with C-q as prefix): Type Cltr-q, then :, and enter in tmux: send-keys C-q

Below it is the answer:

---

To make it simple, add the below line in your ~/.tmux.conf

bind-key -n C-q send-prefix

Then you can directly use C-q as bind-key for your remote tmux.