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#!/bin/sh
for battery in /sys/class/power_supply/BAT?*; do
# If non-first battery, print a space separator.
[ -n "${capacity+x}" ] && printf " "
capacity="$(cat "$battery/capacity" 2>&1)"
if [ "$capacity" -gt 90 ]; then
status=" "
elif [ "$capacity" -gt 60 ]; then
status=" "
elif [ "$capacity" -gt 40 ]; then
status=" "
elif [ "$capacity" -gt 10 ]; then
status=" "
else
status=" "
fi
case "$(cat "$battery/status" 2>&1)" in
Full) status=" " ;;
Discharging)
if [ "$capacity" -le 20 ]; then
status="$status"
fi
;;
Charging) status="$status" ;;
"Not charging") status=" " ;;
Unknown) status="? $status" ;;
*) exit 1 ;;
esac
echo "$status$capacity%"
done
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