ASF GitHub Bot commented on AIRFLOW-2888:

bolkedebruin opened a new pull request #3740: [AIRFLOW-2888] Remove shell=True 
and bash from task launch
URL: https://github.com/apache/incubator-airflow/pull/3740
   shell=True is a security risk. Bash is not required to launch
   tasks and will consume extra resources.
   Make sure you have checked _all_ steps below.
   ### Jira
   - [x] My PR addresses the following [Airflow 
Jira](https://issues.apache.org/jira/browse/AIRFLOW/) issues and references 
them in the PR title. For example, "\[AIRFLOW-XXX\] My Airflow PR"
     - https://issues.apache.org/jira/browse/AIRFLOW-2888
     - In case you are fixing a typo in the documentation you can prepend your 
commit with \[AIRFLOW-XXX\], code changes always need a Jira issue.
   ### Description
   - [X] Here are some details about my PR, including screenshots of any UI 
   ### Tests
   - [X] My PR adds the following unit tests __OR__ does not need testing for 
this extremely good reason:
   Tests updated (but not functionally)
   ### Commits
   - [X] My commits all reference Jira issues in their subject lines, and I 
have squashed multiple commits if they address the same issue. In addition, my 
commits follow the guidelines from "[How to write a good git commit 
     1. Subject is separated from body by a blank line
     1. Subject is limited to 50 characters (not including Jira issue reference)
     1. Subject does not end with a period
     1. Subject uses the imperative mood ("add", not "adding")
     1. Body wraps at 72 characters
     1. Body explains "what" and "why", not "how"
   ### Documentation
   - [X] In case of new functionality, my PR adds documentation that describes 
how to use it.
     - When adding new operators/hooks/sensors, the autoclass documentation 
generation needs to be added.
   ### Code Quality
   - [X] Passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
   cc: @aoen @mistercrunch @ashb 

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> Do not use Shell=True and bash to launch tasks
> ----------------------------------------------
>                 Key: AIRFLOW-2888
>                 URL: https://issues.apache.org/jira/browse/AIRFLOW-2888
>             Project: Apache Airflow
>          Issue Type: Bug
>            Reporter: Bolke de Bruin
>            Priority: Major
> Using shell=True is a security risk and there is no need to use bash

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