ensure a named windows on tmux exists, and run commands in it.

tmux-run.sh

#!/bin/sh

## tmux-run <window-name>  <cmd args ...>

## start if session not running
if [ "x$TMUX" = "x" ] ;
then
    tmux new -As0 \; detach-client
fi

ID=$(tmux list-windows  -F '#I #W' | grep -w $1 | cut -d ' ' -f1)
if [ "x$ID" = "x" ] ;
then
    tmux new-window -n $1
    ID=$(tmux list-windows  -F '#I #W' | grep -w $1 | cut -d ' ' -f1)
fi

#tmux select-window -t $ID
shift
## Send ^C , to break the process, and make sure shell is active.
sleep 2
tmux send-keys -t $ID C-c
## send ^C again after a second . let's be sure we kill it.
sleep 1
tmux send-keys -t $ID C-c

for  c in "$@"
do
    tmux send-keys -t $ID -- "$c"
    tmux send-keys -t $ID ' '
done
tmux send-keys -t $ID C-m