Launch tmux with a command in the background without stopping said command when tmux stop running

Question

So, I want to launch a shell command through tmux, but in the background and detaching from said tmux session...so I do it like so:

tmux new-session -A -s myprogramsession \; send -t myprogramsession "nohup /usr/bin/myscript.sh &>/dev/null &" ENTER \; detach -s myprogramsession

This works. But now, if I want to make tmux stop once it detached from the aforementioned session, I would need to either do:

this:

tmux new-session -A -s myprogramsession \; send -t myprogramsession "nohup /usr/bin/myscript.sh &>/dev/null &" ENTER \; detach -s myprogramsession \; kill-session -t myprogramsession

or this:

tmux new-session -A -s myprogramsession \; send -t myprogramsession "nohup /usr/bin/myscript.sh &>/dev/null &" ENTER \; detach -s myprogramsession && pkill tmux

While both methods (one using pkill and kill-session from tmux) seems to work on first glance, I noticed both prevent the process/script launched through nohup from staying in the background, compared to the first attempt which manage to do so (minus for the part about stopping tmux).

How could I make tmux (based on the above examples) launch a shell command on a session (in the background), detach it, then stop tmux completely while the shell command is still running in the background?

P.S.: I did check through this and this post, but failed to find a solution there.

Answer 1

This looked easier than I thought:

tmux new-session -A -s myprogramsession \; send -t myprogramsession "nohup /usr/bin/myscript.sh &>/dev/null &" ENTER \; detach -s myprogramsession && sleep 1 && pkill tmux

This work if a sleep is added before pkill comes in. Probably not the best solution however.