命令获取两个电池的充电和剩余时间的详细信息。

Question

我有一台有两个电池的笔记本电脑。我想弄清楚这两个电池的详细情况。特别是，我希望在两个电池耗尽之前的剩余时间和两个电池的剩余电量。有命令可以这样做吗？

当我跑步时：

acpi -b

我得到以下输出：

Battery 0: Full, 100%
Battery 1: Discharging, 80%, 05:10:03 remaining

所以我想要一个命令来代替给我这样的命令：

All batteries: Discharging 90%, 10:10:06 remaining

Answer 1

这是我的剧本。这取决于acpi和acpitool

它：

1. 输出设备中所有电池的平均百分比
2. 所有电池需要多长时间才能完全充电(如果设备是插上电源的话)，或者需要多长时间才能完全空置(如果没有插上电源)，
3. 上面写着设备是否被充电了。

最终输出采用All batteries: Discharging 90%, 10:10:06 remaining格式(不同的数字和放电可以充电)。

#!/bin/bash

get_time_until_charged() {

    # parses acpitool's battery info for the remaining charge of all batteries and sums them up
    sum_remaining_charge=$(acpitool -B | grep -E 'Remaining capacity' | awk '{print $4}' | grep -Eo "[0-9]+" | paste -sd+ | bc);

    # finds the rate at which the batteries being drained at
    present_rate=$(acpitool -B | grep -E 'Present rate' | awk '{print $4}' | grep -Eo "[0-9]+" | paste -sd+ | bc);

    # divides current charge by the rate at which it's falling, then converts it into seconds for `date`
    seconds=$(bc <<< "scale = 10; ($sum_remaining_charge / $present_rate) * 3600");

    # prettifies the seconds into h:mm:ss format
    pretty_time=$(date -u -d @${seconds} +%T);

    echo $pretty_time;
}

get_battery_combined_percent() {

    # get charge of all batteries, combine them
    total_charge=$(expr $(acpi -b | awk '{print $4}' | grep -Eo "[0-9]+" | paste -sd+ | bc));

    # get amount of batteries in the device
    battery_number=$(acpi -b | wc -l);

    percent=$(expr $total_charge / $battery_number);

    echo $percent;
}

get_battery_charging_status() {

    if $(acpi -b | grep --quiet Discharging)
    then
        echo "Discharging";
    else # acpi can give Unknown or Charging if charging, https://unix.stackexchange.com/questions/203741/lenovo-t440s-battery-status-unknown-but-charging
        echo "Charging";
    fi
}

echo "All batteries: $(get_battery_charging_status) $(get_battery_combined_percent)%, $(get_time_until_charged ) remaining";