ntfy/examples/example_desktop_notifications.sh

#!/bin/bash
# This is an example shell script showing how to consume a ntfy.sh topic using
# a simple script. The notify-send command sends any arriving message as a desktop notification.

while read msg; do
  [ -n "$msg" ] && notify-send "$msg"
done < <(stdbuf -i0 -o0 curl -s ntfy.sh/mytopic/raw)