https://medium.com/@cristianduguet/track-cpu-and-gpu-temperature-in-tmux-52d3e18457e2
Tenés que instalarlos usando el tmux plugin manager.
https://github.com/tmux-plugins/tpm
git clone https://github.com/tmux-plugins/tpm ~/.tmux/plugins/tpm
# List of plugins
set -g @plugin 'tmux-plugins/tpm'
set -g @plugin 'tmux-plugins/tmux-sensible'