monitor for file changes and loop

monitorchanges.sh

#!/bin/bash

while true
  do
      inotifywait  . -e modify -r 
      wait 
      
      now=$(date +"%T") 
      wait 
      
      notify-send "Pre-execute $now";
      wait
      
      $@
      
      now=$(date +"%T") 
      wait 

      notify-send "Post-execute $now";
  done