With running this command:
python manage.py validate
I faced with this error:
Unknown command: 'validate'

What should I do now?

For more explanations:
- Linux
- Virtualenv
- Python 3.4.3+
- Django (1, 9, 2, 'final', 0)

I found the answer myself:
pip install Django==1.8.2

Django==1.9.2 Does not support some commands.

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