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hhromic/battery.sh

Created October 6, 2018 15:54
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Show the current capacity of all managed batteries in Linux
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battery.sh
#!/usr/bin/env bash
# Show the current capacity of all managed batteries
# script by github.com/hhromic
POWER_SUPPLY_DIR=/sys/class/power_supply
mapfile -t CAPACITIES < <(compgen -G "$POWER_SUPPLY_DIR"/'*'/capacity)
for capacity in "${CAPACITIES[@]}"; do
battery="${capacity%/*}"
battery="${battery##*/}"
printf "%s=%s"$'\n' "$battery" "$(cat "$capacity")"
done
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