tmux force me to use -f flag for session-list

[Set27]

Hi guys. I just want to write really simple script for tmux

#!bin/bash/

attached_session=$(tmux list-sessions | grep "(attached)" | cut -d ":" -f 1)
echo $attached_session
windows_count=$(tmux list-window | wc -l)

for((i=1; i<=$windows_count; i++)); do
        tmux send-keys -t $i 'clear' Enter
        echo $i
done

This script just send 'clear' to each of window for attached session. If I use it directly in terminal it's works perfect.
But I want it to runs every time I type tmux in terminal. So I've pasted source-file /path/to_script.sh in my .tmux.conf and now I see it

Is way to fix it?

[nicm]

run-shell not source-file.

[Set27]

@nicm thank for helping, I don't have any errors now, but script don't run.
My last in .tmux.conf it run-shell 'bash ~/config/parse_session.sh'
and when I run tmux, it's not clear all window. But If I run script manual, all work perfect.
What I am doing wrong?

[nicm]

.tmux.conf will only be run when you start a new tmux server and there will only be one window.

Maybe you want to run it from the client-attached hook?

[Set27]

What you mean by client-attached hook?

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