pm-hibernate배터리 수준이 특정 임계 값 미만인 경우 배터리 수준을 확인하고 사용자 지정 명령을 호출하는 작은 스크립트 가 있습니다.

#!/bin/sh

###########################################################################
#
# Usage: system-low-battery
#
# Checks if the battery level is low. If “low_threshold” is exceeded
# a system notification is displayed, if “critical_threshold” is exceeded
# a popup window is displayed as well. If “OK” is pressed, the system
# shuts down after “timeout” seconds. If “Cancel” is pressed the script
# does nothing.
#
# This script is supposed to be called from a cron job.
#
###########################################################################

# This is required because the script is invoked by cron. Dbus information
# is stored in a file by the following script when a user logs in. Connect
# it to your autostart mechanism of choice.
#
# #!/bin/sh
# touch $HOME/.dbus/Xdbus
# chmod 600 $HOME/.dbus/Xdbus
# env | grep DBUS_SESSION_BUS_ADDRESS > $HOME/.dbus/Xdbus
# echo 'export DBUS_SESSION_BUS_ADDRESS' >> $HOME/.dbus/Xdbus
# exit 0
#
if [ -r ~/.dbus/Xdbus ]; then
  . ~/.dbus/Xdbus
fi

low_threshold=10
critical_threshold=4
timeout=59
shutdown_cmd='/usr/sbin/pm-hibernate'

level=$(cat /sys/devices/platform/smapi/BAT0/remaining_percent)
state=$(cat /sys/devices/platform/smapi/BAT0/state)

if [ x"$state" != x'discharging' ]; then
  exit 0
fi

do_shutdown() {
  sleep $timeout && kill $zenity_pid 2>/dev/null

  if [ x"$state" != x'discharging' ]; then
    exit 0
  else
    $shutdown_cmd
  fi
}

if [ "$level" -gt $critical_threshold ] && [ "$level" -lt $low_threshold ]; then
  notify-send "Battery level is low: $level%"
fi

if [ "$level" -lt $critical_threshold ]; then

  notify-send -u critical -t 20000 "Battery level is low: $level%" \
    'The system is going to shut down in 1 minute.'

  DISPLAY=:0 zenity --question --ok-label 'OK' --cancel-label 'Cancel' \
    --text "Battery level is low: $level%.\n\n The system is going to shut down in 1 minute." &
  zenity_pid=$!

  do_shutdown &
  shutdown_pid=$!

  trap 'kill $shutdown_pid' 1

  if ! wait $zenity_pid; then
    kill $shutdown_pid 2>/dev/null
  fi

fi

exit 0

매우 간단한 스크립트이지만 아이디어를 얻고 필요에 맞게 쉽게 조정할 수 있다고 생각합니다. 시스템에서 배터리 잔량에 대한 경로가 다를 수 있습니다. 조금 더 휴대용은 아마도 acpi | cut -f2 -d,배터리 수준을 얻는 것과 같은 것을 사용하는 것일 것입니다 . 이 스크립트는 cron에서 1 분마다 실행되도록 예약 할 수 있습니다. 로 crontab을 편집 crontab -e하고 스크립트를 추가하십시오.

*/1 * * * * /home/me/usr/bin/low-battery-shutdown

또 다른 해결책은 Gnome 또는 Xfce와 같은 데스크탑 환경을 설치하고 창 관리자를 i3으로 변경하는 것입니다. 언급 된 두 중지 환경에는 컴퓨터 전원을 관리하는 전원 관리 데몬이 있습니다. 그러나 나는 당신이 의도적으로 사용하지 않고 더 최소한의 해결책을 찾고 있다고 가정합니다.

답변

PercentageAction=2
CriticalPowerAction=HybridSleep

TimeAction=120

#!/usr/bin/env bash

# Notifies the user if the battery is low.
# Executes some command (like hibernate) on critical battery.
# This script is supposed to be called from a cron job.
# If you change this script's name/path, don't forget to update it in crontab !!

level=$(cat /sys/class/power_supply/BAT1/capacity)
status=$(cat /sys/class/power_supply/BAT1/status)

# Exit if not discharging
if [ "${status}" != "Discharging" ]; then
  exit 0
fi


# Source the environment variables required for notify-send to work.
. /home/anmol/.env_vars

low_notif_percentage=20
critical_notif_percentage=15
critical_action_percentage=10


if [ "${level}" -le ${critical_action_percentage} ]; then
  # sudo is required when running from cron
  sudo systemctl hibernate
  exit 0
fi

if [ "${level}" -le ${critical_notif_percentage} ]; then
  notify-send -i '/usr/share/icons/gnome/256x256/status/battery-caution.png' "Battery critical: ${level}%"
  exit 0
fi

if [ "${level}" -le ${low_notif_percentage} ]; then
  notify-send -i '/usr/share/icons/gnome/256x256/status/battery-low.png' "Battery low: $level%"
  exit 0
fi

#!/usr/bin/env bash

# Create a new file containing the values of the environment variables
# required for cron scripts to work.
# This script is supposed to be scheduled to run at startup.

env_vars_path="$HOME/.env_vars"

rm -f "${env_vars_path}"
touch "${env_vars_path}"
chmod 600 "${env_vars_path}"

# Array of the environment variables.
env_vars=("DBUS_SESSION_BUS_ADDRESS" "XAUTHORITY" "DISPLAY")

for env_var in "${env_vars[@]}"
do
    echo "$env_var"
    env | grep "${env_var}" >> "${env_vars_path}";
    echo "export ${env_var}" >> "${env_vars_path}";
done

*/5 * * * *   root  acpi --battery |
   awk -F, '/Discharging/ { if (int($2) < 10) print }' |
   xargs -ri acpi_fakekey 205