#!/bin/sh if [ -f /sys/class/power_supply/sony_controller_battery_*/capacity ]; then percentage=$(cat /sys/class/power_supply/sony_controller_battery_*/capacity) if [ percentage -lt 40 ]; then printf "%s%%" "$percentage" exit fi if [ percentage -lt 20 ]; then printf "%s%%" "$percentage" exit fi printf "%s%%" "$percentage" fi