use shell script to update

dot_config/waybar/config

@@ -109,10 +109,10 @@
     "custom/update":{
         "format": "{} ",
 	"interval": 3600,
-	"exec": "checkupdates | wc -l", 
+	"exec": "checkupdates | wc -l",
 	"exec-if": "exit 0",
-        "on-click": "tilix -e 'sudo pacman -Syu'; pkill -SIGRTMIN+8 waybar",
-        "signal": 8
+        "on-click": "tilix -e '/home/guoyi/.config/waybar/update.sh'",
+	"signal": 8
     },
     "custom/power":{
         "format": "⏻",

dot_config/waybar/executable_update.sh

@@ -0,0 +1,4 @@
+#!/bin/sh
+sudo pacman -Syu
+echo Done - Press Enter to exit
+read _\