How to test database connection without using Hibernate ORM in Grails

You will likely encounter a headache problem when bringing a large project to cloud-based deployment development, especially testing the access of databases if you have to request of accessing internally…

Create and manage virtual environments in Python

[dropcap]I[/dropcap]n this writing, I aim to present concisely how to create and manage virtual environments in Python. You can go further by getting through official documentation from the Python website.…

Docker: Recipes, Tips and Tricks

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See cluster resources usage with kubectl command

Monitoring resources is among the significantly important tasks of an engineer working with Kubernetes. In the K8s ecosystem, we can find a range of tools and software allow us to…

How to append text to a system file via terminal with sudo command

Working with Unix-based systems, I have gradually become sluggish to open an editor and tweak something in a file. Especially, system files must only be allowed by a superuser to…