title: Shell script doesn't wait
body: <p>This is a follow on from my question that couldn't (seemingly) be resolved <a href="https://stackoverflow.com/questions/28905334/python-communicate-wait-with-a-shell-subprocess">here</a> . The problem I have is I'm developing a Python script to run on a cluster that needs to call up external scripts / programs and wait for them to finish before continuing (otherwise the data it needs won't be there).</p>
  
  <p>To run a script on the cluster it needs to be submitted by a shell script. This is what causes me the problem, as I execute the shell via Python but the shell runs the script/program and closes itself before said script/program finishes. This makes Python think it's done and so it continues.</p>
  
  <p>I've spent longer than I care to admit trying to solve this via google and this website and am drawing a blank as it seems like it SHOULD wait, and it just doesn't.</p>
  
  <p>I've enclosed a sample shell script and would be willing to try almost anything.</p>
  
  <p>EDIT FOR CLARIFICATION: </p>
  
  <p>This script is an example .sh file that is used to launch a script/program. In this example it is launching a python script called "Test.py". This .sh file would be submitted to the cluster via the queue system using the command "qsub ****.sh" where **** is the shell name. This is done via the terminal, or in my case, via another Python script (the one that needs to know when this other process is done). </p>
  
  <p>This shell script does not wait for Test.py to finish before exiting. This is what causes me all the problems.</p>
  
  <pre><code>#!/bin/bash
  #
  #PBS -l walltime=1:59:59,nodes=1:ppn=1
  #PBS -j oe
  #PBS -m ae
  #
  #-------------------------------------------------
  #
  cd ${HOME}/ERA-Primary-Folder
  #
  python ./Test.py
  </code></pre>
  
  <p>Sorry if doing a new question following on from my own is against the rules here. It just seems like a fresh issue as my original question looked at the Python side of it, whilst this focuses on the shell script.</p>
  
  <p>Any questions please just ask. Thanks in advance to anyone who tries to help me!</p>