#!/usr/bin/env bash
set -Eeuo pipefail

path="/run/shm/msg.html"

if [ -f "$path" ] && [ -s "$path" ]; then
  echo -n "s: " && cat "$path"
fi

inotifywait -m "$path" |
  while read -r fp event fn; do
    case "${event,,}" in
      "modify"* ) echo -n "s: " && cat "$path" ;;
      "delete_self" ) echo "c: vnc" ;;
    esac    
  done