tmuxrc: add battery info

script/batinfo

@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+#
+# Print battery percentage to stdout
+
+set -e
+
+if [ $(uname -s) = "Darwin" ]; then
+  echo "" # TODO
+else # Linux
+  echo "$(cat /sys/class/power_supply/BAT0/capacity)%"
+fi

tmux.conf

@@ -10,7 +10,7 @@ set-option -g set-titles on
 set-option -g focus-events on
 set -g status-style 'fg=white, bg=colour8'
 set -g window-status-current-style 'fg=black, bg=green'
-set -g status-right '#[fg=black, bg=colour2] #(sysinfo) #[default] #[fg=white, bg=colour238] %H:%M #[default]'
+set -g status-right '#(batinfo) #[fg=black, bg=colour2] #(sysinfo) #[default] #[fg=white, bg=colour238] %H:%M #[default]'
 set -g status-justify centre
 
 set-window-option -g mode-keys vi