Re: Notifications

[Samuel Sieb]

On 8/6/19 12:13 PM, Danishka Navin wrote:
> Imagine no user logged in to neither GUI nor CLI but a background 
> service is running.
> Is it possible to send a notification to GUI after completion of the 
> processing running on the background?

So you want to send a notification to the gdm login screen?  You can do 
that using the gdm user's dbus and the notify2 python library.  Install 
"python3-notify2" and create a python script for the notification 
(example below).  Then you can run:
sudo -u gdm DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/42/bus 
/tmp/notif.py
My test script was at /tmp/notif.py

# cat /tmp/notif.py
#!/usr/bin/python3

import notify2

notify2.init("my test")

n = notify2.Notification("Hey you!", "information here")
n.show()