title: CRON JOB scheduling while checking the other scripts status
body: <p>I have a scenario where I have three shell scripts in which 2 scripts should start simultaneously and as soon as the first two have finished the third script should start.
  Ex: 
  Test1.sh and Test2.sh should start parallely and when both the scripts are completed successfully Test3.sh should start. Could someone help me with this scenario on how to do that.</p>