battery?

battery

#!/bin/sh

CAPACITY_PATH="/sys/class/power_supply/BAT1/capacity"
capacity=$(cat ${CAPACITY_PATH})

ESC="\e"
BK=40
LBK=100
FW=30
LFW=90
BLK=0
RED=1
GRN=2
YLW=3
BLE=4
MAG=5
CYN=6
LGR=7
RGB=8
TAIL="m"
RST="${ESC}[0m"

case $((
    0  <= ${capacity} && ${capacity} <=  9 ? 1 :
    10 <= ${capacity} && ${capacity} <= 19 ? 2 :
    20 <= ${capacity} && ${capacity} <= 39 ? 3 :
    40 <= ${capacity} && ${capacity} <= 79 ? 4 : 
    80 <= ${capacity} && ${capacity} <= 100? 5 : 0)) in
    0)
        m="BAT: NaN %"
        ;;
    1)
        m="$m${ESC}[$((${BK}+${RED}))mBAT: ${capacity}%${RST}"
        ;;
    2)
        m="$m${ESC}[$((${BK}+${RGB}));5;208mBAT: ${capacity}%${RST}"
        ;;
    3)
        m="$m${ESC}[$((${BK}+${YLW}))mBAT: ${capacity}%${RST}"
        ;;
    4)
        m="$m${ESC}[$((${BK}+${GRN}))mBAT: ${capacity}%${RST}"
        ;;
    5)
        m="$m${ESC}[$((${BK}+${BLE}))mBAT: ${capacity}%${RST}"
        ;;
esac

echo -e $m