a quick bash script with a notification when the internet connection is up / restored

check_internet.sh

#!/bin/bash

SRC_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )";
ESC=$(printf "\e"); Ys="$ESC[33m"; Ye="$ESC[0m"; Rs="$ESC[31m"; Re="$ESC[0m";
P=$(echo "$ESC[35m[${BASH_SOURCE[0]}]$ESC[0m");

before_exit () {
  if ping -c 1 google.com &> /dev/null
  then {
    echo "$P Yay, there is internet!";
    exit 0;
  } else {
    echo "$P can't connect, trying again...";
    sleep 1;
    before_exit;
  }
  fi
}

clean_exit () {
  sleep 0.5;
  echo "$P exiting...";
  if [[ `uname -s` == "Darwin" ]];
  then
    osascript -e 'display notification "Have a great day!" with title "Internet is up!" sound name "Hero"'
  fi
  sleep 0.5;
}

trap clean_exit 0;
before_exit;