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Is it possible to execute commands on tmux detach?

I usually have a rails console and server running in the tmux session, on detach is it possible to automatically end those?

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    The whole point of detaching from a session is that programs running inside the session are unaware that it has happened.
    – chepner
    Apr 9, 2014 at 13:49

1 Answer 1

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AFAICT, tmux didn't provide hooking on detach, attach events. But you can always send a command to a detached session, using tmux send:

tmux send -t session_name.panel '<command><Enter>'

Example:

$ tmux new -s foo

Pressing bind-key + d to detach. Then:

$ tmux send -t foo 'echo foo<Enter>'
$ tmux attach -t foo

and you will see the word foo.

Note that <Enter> here mean you type the literal Enter.

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    can we automate these tasks without touching any keys?
    – 32r34wgf3e
    Oct 30, 2017 at 5:20

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