I need to enable power (AC) failure (off-line) and power on (on-line) notifications, like this notification:
I searched and tried to do that, but I didn't find any successful articles. I use these commands to monitor my AC adapter:
acpi- a
echo ac_adapter=$(acpi -a | cut -d' ' -f3 | cut -d- -f1)
But I don't know how to write notification on code.
Can I write a shell script like the following?
#!/bin/bash
power=ac_adapter=$(acpi -a | cut -d' ' -f3 | cut -d- -f1)
s1="$power"
if [ "$s1" = "off-line" ]; then
notify-send --urgency=low "Power Manager" "Power Down" -i battery_low
echo "notification: off" >~/.scripts/notification
else
if [ $s1 = "on-line" ]; then
notify-send --urgency=normal "Power Manager" "Power Up" -i battery_full
fi
fi
2 Answers
The shell script below works for AC power updates like plugged in and plugged out. You should run this code at start-up; it runs in an infinite loop.
#!/bin/bash
old="$(upower -i /org/freedesktop/UPower/devices/line_power_AC | fgrep online | awk '{print $2}')"
while sleep 1; do
new="$(upower -i /org/freedesktop/UPower/devices/line_power_AC | fgrep online | awk '{print $2}')"
if [ "$new" != "$old" ]; then
if [ "$new" == "yes" ]; then
notify-send --icon=gnome-power-manager "AC power on"
elif [ "$new" == "no" ]; then
notify-send --icon=gnome-power-manager "Battery power on"
fi
fi
old="$new"
done
Edit the notify-send as you wish.
According to Sudheer's answer I wrote another shell script, and it works fine on Ubuntu 14.04 (Trusty Tahr) with notify-send -t option. When I add --expire-time=TIME it won't work, but notify-send -t 30 works perfectly. Why?
Here is my script:
#!/bin/bash
stat=$(acpi -a | cut -d' ' -f3 | cut -d- -f1)
if [ "$stat" == 'on' ];then
a=yes
elif [ "$stat" == 'off' ];then
a=no
fi
while true; do
stat=$(acpi -a | cut -d' ' -f3 | cut -d- -f1)
if [ "$stat" != "$a" ]; then
if [ "$stat" == "on" ];then
notify-send -t 30 --icon=gpm-ac-adapter "AC power on"
elif [ "$stat" == "off" ];then
notify-send -t 30 --icon=notification-power-disconnected "AC Power Off Battery power on"
fi
fi
a=$stat
sleep 1
done
