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30 lines
673 B
Bash
30 lines
673 B
Bash
#!/bin/sh
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PREF=/sys/class/power_supply/BAT0
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[ -r "${PREF}" ] || exit 1
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BATTERY_STATUS=$(< ${PREF}/status)
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typeset -i FULL_CAPACITY=$(< ${PREF}/charge_full)
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typeset -i WARNING_CAPACITY=$(( ${FULL_CAPACITY} * 20 / 100 ))
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typeset -i LOW_CAPACITY=$(( ${FULL_CAPACITY} * 10 / 100 ))
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typeset -i REMAINING_CAPACITY=$(< ${PREF}/charge_now)
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REMAINING_PERCENTAGE=$( echo "scale=1; ${REMAINING_CAPACITY} * 100 / ${FULL_CAPACITY}" |bc )
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case "${BATTERY_STATUS}" in
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'Full') # battery full
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printf "AC"
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;;
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'Discharging') # battery discharging
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printf "${REMAINING_PERCENTAGE}%%"
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;;
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'Charging') # battery charging
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printf "AC^${REMAINING_PERCENTAGE}%%"
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;;
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esac
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exit 0
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