dotfiles/i3status/update_battery.sh

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#!/bin/bash
PERCENT=$(upower -i /org/freedesktop/UPower/devices/battery_macsmc_battery \
| awk -F: '/percentage/ {gsub(/ /,"",$2); print $2}')
# fallback so i3status never crashes
echo "${PERCENT:-N/A}" > /tmp/battery_percent