This [tmux](https://github.com/tmux/tmux/wiki) plugin is awesome: continuous save of your tmux environment for automatic restore whenever tmux is started, even after a reboot. Load up the [tpm](https://github.com/tmux-plugins/tpm) plugin manager so you can install this and the requisite [tmux-resurrect](https://github.com/tmux-plugins/tmux-resurrect) plugin to get going.