server-scripts/smartd-notify-all

#!/usr/bin/env bash
# Notify all users on S.M.A.R.T errors
# Place in /usr/share/smartmontools/smartd_warning.d/ or use "DEVICESCAN -m @smartd-notify-all" in /etc/smartd.conf
# Copyright 2021 Bryan C. Roessler

parent="${BASH_SOURCE[0]}"
parent=${parent%/*}

[[ -f $parent/script-functions ]] && . "$parent"/script-functions || exit 1

is_root

IFS=$'\n'
for LINE in $(w -hs); do
    USER=$(echo "$LINE" | awk '{print $1}')
    USER_ID=$(id -u "$USER")
    DISP_ID=$(echo "$LINE" | awk '{print $8}')
    sudo su "$USER" DISPLAY="$DISP_ID" DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/"$USER_ID"/bus notify-send "S.M.A.R.T Error ($SMARTD_FAILTYPE) $SMARTD_MESSAGE" --icon=dialog-warning
done