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Postgres - FATAL: database files are incompatible with server
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If you recently upgraded to 11 or 12 from 10.x you can run the below command to upgrade your postgres data directory retaining all data:
brew postgresql-upgrade-database
The above command is taken from the output of brew info postgres
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What does Docker add to lxc-tools (the userspace LXC tools)?
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From the Docker FAQ:
Docker is not a replacement for lxc. "lxc" refers to capabilities of the linux kernel (specifically namespaces and control groups) which allow sandboxing processes from one another, and controlling their...
What's the difference between xsd:include and xsd:import?
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Use xsd:include to bring in an XSD from the same or no namespace.
Use xsd:import to bring in an XSD from a different namespace.
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What is the purpose of shuffling and sorting phase in the reducer in Map Reduce Programming?
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First of all shuffling is the process of transfering data from the mappers to the reducers, so I think it is obvious that it is necessary for the reducers, since otherwise, they wouldn't be able to have any input (or input from every mapper). Shuffling can start even before the map ...
svn : how to create a branch from certain revision of trunk
The following action will only create a branch from the head revision of the trunk. How do I create a branch from a specific revision? Thanks.
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Cron and virtualenv
I am trying to run a Django management command from cron. I am using virtualenv to keep my project sandboxed.
9 Answers
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How to delete images from a private docker registry?
... private docker registry, and I want to delete all images but the latest from a repository. I don't want to delete the entire repository, just some of the images inside it. The API docs don't mention a way to do this, but surely it's possible?
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How to move a model between two Django apps (Django 1.7)
...s below this post refer to my old answer.
First migration to remove model from 1st app.
$ python manage.py makemigrations old_app --empty
Edit migration file to include these operations.
class Migration(migrations.Migration):
database_operations = [migrations.AlterModelTable('TheModel', 'n...
My pull request has been merged, what to do next?
I recently participated in a project from GitHub. I did the following:
2 Answers
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how to unit test file upload in django
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From Django docs on Client.post:
Submitting files is a special case. To POST a file, you need only
provide the file field name as a key, and a file handle to the file
you wish to upload as a value. For example:
c = ...