I am trying to find a nice way to restore the SSH agent when I reconnect a disconnected tmux session. The cause seems to be that the SSH agent session changes but the environment variable from the tmux session is not updated. How can I automate this, before attaching the session itself? Because the session I am attaching to does not always have a bash prompt, so I cannot afford to type something i
![How to auto-update SSH agent environment variables when attaching to existing tmux sessions?](https://cdn-ak-scissors.b.st-hatena.com/image/square/98d6f053a97a87156775f60757c60865d0f2c47d/height=288;version=1;width=512/https%3A%2F%2Fcdn.sstatic.net%2FSites%2Fstackoverflow%2FImg%2Fapple-touch-icon%402.png%3Fv%3D73d79a89bded)