Reconnect Script for crappy USB UMTS routers

reconnect.sh

#!/bin/sh

# Reconnect Script for crappy USB UMTS routers
# Author: Leonhardt Wille <github.com/lwille>

host="www.google.de"
app="<Application Name>"
ping="/sbin/ping"

retry_after=1
check_after=5



function execCommand {
  echo "executing command $app"
  open -a "$app"
}

function tryPing {
  local status='DISCONNECTED'
  $ping -q -c1 $host &> /dev/null
  if [ "$?" == 0 ]; then
    status='CONNECTED'  
  fi
  echo "$status"
}

while [ 1 ]
do
  status=$(tryPing)

  if [ "$status" != 'CONNECTED' ]; then
    echo "not connected, retrying after $retry_after seconds"
    echo $(execCommand)
    sleep $retry_after
  else      
    echo "CONNECTED, checking after $check_after seconds"
    sleep $check_after    
  fi

done