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#!/usr/bin/env bash
set -euo pipefail
IFS=$'\n\t'
acpi_output=""
pmset_output=""
battery_number=0
battery_percentage=0
battery_remaining=""
if [ $(uname) == "Darwin" ]; then
pmset_output="$(pmset -g batt| tail -n1)"
battery_percentage="$(echo $pmset_output| cut -d';' -f1| cut -d' ' -f4)"
battery_percentage=${battery_percentage%"%"}
if [[ "$pmset_output" == *"discharging"* ]]; then
battery_remaining="$(echo $pmset_output| cut -d';' -f3| cut -d' ' -f2)"
echo "$battery_percentage% ($battery_remaining)"
else
echo "$battery_percentage%"
fi
else
if [ -x /usr/bin/acpi ]; then
acpi_output=$(/usr/bin/acpi -b)
battery_number=$(echo $acpi_output|cut -d':' -f1|cut -d' ' -f2)
battery_state=$(echo $acpi_output|cut -d' ' -f3)
battery_state=${battery_state%","}
battery_percentage=$(echo $acpi_output|cut -d' ' -f4)
battery_percentage=${battery_percentage%","}
battery_percentage=${battery_percentage%"%"}
if [ $battery_number -ge 0 ]; then
if [ $battery_state = "Discharging" ]; then
battery_remaining=$(echo $acpi_output|cut -d' ' -f5)
echo "$battery_percentage% ($battery_remaining)"
else
echo "$battery_percentage%"
fi
fi
fi
fi
exit 0
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