Temporarily mute Ubuntu's notification for undisturbed work

notification-mute.sh

#!/bin/bash

echo "Temporarily muting notifications until aborted..."
killall -s SIGSTOP notify-osd

keepgoing=1
trap '{ echo "sigint"; keepgoing=0; }' SIGINT
while (( keepgoing )); do
    sleep 5
done

echo "Unmuting notifications..."
killall -s SIGCONT notify-osd