tmux - attach to a session and specify window

Question

I have a script (.sh) and I want it to run in a existing tmux session. I have 1 session with 8 windows in.

Is there a command like tmux a -t session-name, which also specify the window?

And would a script like this work?

#!/bin/bash tmux a -t session-name #What ever to write to specify window# java -jar -Xmx4G -Xms4G Spigot.jar

Answer 1

You can change the active window of a session before you attach to the session.

tmux -t <session-name> select-window -t <windowID>
tmux a -t <session-name>

You can combine two tmux commands as well.

tmux -t session-name select-window -t <windowID> \; a

If you really want to run java, presumably you want to create a new window with new-window, rather than select an existing one with select-window.

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Newer versions of tmux (at least 1.9; did the above ever work, perhaps in 1.6?) no longer appear to have a -t option to specify the session to apply commands to. Instead, each individual command specifies the session.

tmux select-window -t <session-name>:<windowID> \; a -t <session-name>

Answer 2

For tmux version 2.1 this works

tmux a -t  <session-name> \; select-window -t <windowID> \;

Answer 3

You can specify the window after the session separated by a colon.

tmux a -t session:window 

You can even attach to a specific pane.

tmux a -t session:window.pane

Pane can be a number starting from 0. Window can be a number or name. man tmux has more info about different syntaxes allowed for target-session, target-window, and target-pane.

target-window (or src-window or dst-window) specifies a window in the form session:window...

This syntax works on any other command like send-keys. If it's not working you may be on an older version of tmux and need to upgrade or try an approach suggested in the other answers.