zenUtils/batAlarm.sh

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#!/bin/sh
# Just a background script to tell you when your battery's low if you don't
# have a panel.
# Derek Stevens <nilix@nilfm.cc>
# MIT License
flag1=0
flag2=0
while true; do
charge=$(cat /sys/class/power_supply/BAT0/capacity)
if [ $charge -lt 11 ]; then
if [ $flag1 -eq 0 ]; then
flag1=1
notify-send -t 10000 battery [${charge}%]
fi
elif [ $charge -lt 21 ]; then
if [ $flag2 -eq 0 ]; then
flag2=1
notify-send -t 10000 battery [${charge}%]
fi
fi
if [ $charge -gt 20 ]; then
flag2=0
fi
if [ $charge -gt 10 ]; then
flag1=0
fi
sleep 30
done