Linux & DevOps Troubleshooting Interviews.
Troubleshoot and make a sad server happy! "Like LeetCode for Linux"
Capture The Flag challenges. Train and prove your debugging skills.
Practice for your next SRE/DevOps interview.
Get a full remote Linux server with a problem and fix it.
Unix operating systems and derivatives, including GNU/Linux, are playing an important role in the ecosystem of equipments, systems, networks and telecommunications. They are widely deployed in several equipments. This guide focuses mainly on generic system configuration guidelines and on common sense principles that need to be applied during the deployment of hosted services.
This is a card game for teaching kids how to combine unix commands through pipes.
This game assumes the parent knows the basic unix commands: cat, grep, tail, head, wc, sort, uniq. The parent should show also show those commands in action the computer as well, if you do not have any UNIX system you can use jslinux in your browser.
By definition, Design Patterns are reusable solutions to commonly occurring problems(in the context of software design). Design patterns were started as best practices that were applied again and again to similar problems encountered in different contexts. They become popular after they were collected, in a formalized form, in the Gang Of Four book in 1994. Originally published with c++ and smalltalk code samples, design patterns are very popular in Java and C# can be applied in all object-oriented languages. In functional languages like Scala, certain patterns are not necessary anymore.
A comprehensive Domain-Driven Design example with problem space strategic analysis and various tactical patterns.
This is a project of a library, driven by real business requirements. We use techniques strongly connected with Domain Driven Design, Behavior-Driven Development, Event Storming, User Story Mapping.
30 days of Python programming challenge is a step-by-step guide to learn the Python programming language in 30 days. This challenge may take more than100 days, follow your own pace.
These videos may help too:
List of Free Learning Resources In Many Languages.
This list was originally a clone of StackOverflow - List of Freely Available Programming Books with contributions from Karan Bhangui and George Stocker.
The list was moved to GitHub by Victor Felder for collaborative updating and maintenance. It has grown to become one of GitHub's most popular repositories.
Welcome to the "Learn and Test DMARC" console! Here, you'll get a visual breakdown of how email servers communicate, giving you a better understanding of SPF, DKIM, and DMARC and how they work together.
Simple Accessibility Guidance for Beginners.
Easy-to-follow steps for beginners to review website accessibility.
This demo only works in Chromium 125+. Example of futur CSS anchor tool.
Docker-Compose file for vulnerability environment.
Vulhub is an open-source collection of pre-built vulnerable docker environments. No pre-existing knowledge of docker is required, just execute two simple commands and you have a vulnerable environment.