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How to set virtualenv for a crontab?

Recent I was asked  to batch run Python script in a virtualenv and also run in crontab. for example,  pyspark_hello_world.py

I …

Using EDUP EP-N8508GS USB Mini WIFI adapter on Windows 2008r2

We have a Server installed Windows 2008r2, and I have to use wireless. I have 3 optional solution, Xiaomi Mini Wifi adapter, …

How to Connect Spark with PostgreSQL

After installing SparkR, Let’s try to import data from PostgreSQL,