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#!/bin/sh
# Usage:
# This script prints a battery icon and percentage charge.
# If charging, it will show a charging icon instead of a battery
#
# By default, it will show the first battery found.
# If you have multiple batteries, you can specify the battery as an argument to this script.
#
# Example:
# $ dwmb-battery BAT1
# 86%
# 00-19%
# 20-39%
# 40-59%
# 60-79%
# 80-100%
# or charging
[ -z "$1" ] && bat=$(echo /sys/class/power_supply/BAT* | head -n 1) ||
bat=/sys/class/power_supply/"$1"
[ ! -d "$bat" ] && echo "No battery found." && exit 1
status=$(cat "$bat"/status)
capacity=$(cat "$bat"/capacity)
# for debugging, $2 is the percentage to print
[ -n "$2" ] && capacity=$2
case "$status" in
Charging) icon=" " ;;
*) icon="" ;;
esac
# If the battery is not charging, evaluate its current charge and print an icon accordingly
[ -z "$icon" ] &&
case "$capacity" in
[0-9] | [0-1][0-9]) icon=" " ;;
[2-3][0-9]) icon=" " ;;
[4-5][0-9]) icon=" " ;;
[6-7][0-9]) icon=" " ;;
[8-9][0-9] | 100) icon=" " ;;
esac
printf " %s%s%%" "$icon" "$capacity"
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