Switch between nested tmux sessions

Question

I'm writing a zsh script that setup nested session. I have a session and a session inside that session.

sessionA
   sessionB

I can create sessionA in detach mode -d and then call tmux inside that to create nested sessionB but how to switch to sessionB?

I checked manpage and there's no switch-session option. Much appreciated.

Answer 1

You would first start a session:

tmux new-session -s [session-name] -n [first-tmux-screen-name] -d

We can now separate this window in sections by using splitw options:

tmux splitw -h
tmux splitw -v

we can select a section too:

tmux selectp -t0
tmux splitw -v

And depending on what we want to display, or run in each nested window, we use the send-key option. If we want to add a new window to this tmux session we can use this command:

tmux new-window -n [name-of-new-window] -t [session-name]

zsh works for me:

#!/bin/zsh

tmux new-session -s test -n four-screen -d
tmux splitw -h
tmux splitw -v
tmux selectp -t0
tmux splitw -v

After your run the script: zsh scriptname.zsh then attach to the session: tmux attach

Answer 2

An easy solution is to detach and then attached directly to sessionB.

tmux attach-session -t sessionB

Answer 3

Seem like my question is a little bit not clear.

Here I want to do tasks on nested session but after googling I can achieve that purpose via send-keys with option that specify session name to act on. So no need to switch to session that I'd need to work on - I'm in an zsh script perspective.