It's just for waybar of hyprland config :

killall -SIGUSR2 waybar

Bash script for all time listening changes:

#!/bin/bash

CONFIG_LOC="/home/user/.config/waybar/config"

trap "killall waybar" EXIT

while true; do
  waybar & 
  inotifywait -e create,modify $CONFIG_LOC
  killall waybar
done

Details (Reddit Comment)