title: BashOperator doen't run bash file apache airflow
body: <p>I just started using apache airflow. I am trying to run test.sh file from airflow, however it is not work. </p>
  
  <p>Following is my code, file name is test.py</p>
  
  <pre><code>import os
  from airflow import DAG
  from airflow.operators.bash_operator import BashOperator
  from datetime import datetime, timedelta
  
  
  default_args = {
      'owner': 'airflow',
      'depends_on_past': False,
      'start_date': datetime(2015, 6, 1),
      'email': ['airflow@airflow.com'],
      'email_on_failure': False,
      'email_on_retry': False,
      'retries': 1,
      'retry_delay': timedelta(minutes=5),
      # 'queue': 'bash_queue',
      # 'pool': 'backfill',
      # 'priority_weight': 10,
      # 'end_date': datetime(2016, 1, 1),
  }
  
  dag = DAG('test', default_args=default_args)
  
  # t1 and t2 are examples of tasks created by instantiating operators
  t1 = BashOperator(
      task_id='print_date',
      bash_command='date',
      dag=dag)
  
  create_command = "sh home/ubuntu/test/inst/scripts/test.sh"
  
  if os.path.exists(create_command):
     t2 = BashOperator(
          task_id= 'cllTest',
          bash_command=create_command,
          dag=dag
     )
  else:
      raise Exception("Cannot locate {}".format(create_command))
  
  t2.set_upstream(t1)
  </code></pre>
  
  <p>when I run  python ~/airflow/dags/test.py, it doesn't throw any error. </p>
  
  <p>However, When I run airflow list_dag, it throws following error:</p>
  
  <pre><code>[2017-02-15 20:20:02,741] {__init__.py:36} INFO - Using executor SequentialExecutor
  [2017-02-15 20:20:03,070] {models.py:154} INFO - Filling up the DagBag from /home/ubuntu/airflow/dags
  [2017-02-15 20:20:03,135] {models.py:2040} ERROR - sh home/ubuntu/test/inst/scripts/test.sh
  Traceback (most recent call last):
    File "/home/ubuntu/anaconda2/lib/python2.7/site-packages/airflow/models.py", line 2038, in resolve_template_files
      setattr(self, attr, env.loader.get_source(env, content)[0])
    File "/home/ubuntu/anaconda2/lib/python2.7/site-packages/jinja2/loaders.py", line 187, in get_source
      raise TemplateNotFound(template)
  TemplateNotFound: sh home/ubuntu/test/inst/scripts/test.sh
  </code></pre>
  
  <p>I have tried to used <a href="https://stackoverflow.com/questions/40146934/how-to-run-bash-script-file-in-airflow">How to run bash script file in Airflow</a> for answer, it doesn't work</p>
  
  <p>Where I am making mistake ? </p>