Introduction Deploying set up a ci/cd pipeline with drone ci on freebsd 12 on a FreeBSD 12 machine differs from Linux in several important ways: packages come from the FreeBSD Ports Collection or the binary pkg repository, services are registered in /etc/rc.conf via sysrc(8), and firewall rules are written in pf.conf(5) syntax. This tutorial stays […]
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Reinforcement learning is a subfield within control theory, which concerns controlling systems that change over time and broadly includes applications such as self-driving cars, robotics, and bots for games. Throughout this guide, you will use reinforcement learning to build a bot for Atari video games. By following this tutorial, you will have gained an understanding of the fundamental concepts that govern one’s choice of model complexity in machine learning.
Today we will look into Flyweight design pattern. Flyweight Design Pattern According to GoF, flyweight design pattern intent is: > Use sharing to support large numbers of fine-grained objects efficiently Flyweight design pattern is a Structural design pattern like [Facade pattern](/community/tutorials/facade-design-pattern-in-java "Facade Pattern in Java – Example Tutorial"), [Adapter Pattern](/community/tutorials/adapter-design-pattern-java "Adapter Design Pattern in Java […]
A quick guide on how to use the position: sticky property in CSS to make elements become sticky when the page is scrolled to a specified point.
This error is encountered when the there is a typo or mis-configured setting in your Apache configuration files. It is a generic error that can be indicative of a number of underlying problems.
Today we will look into android internal storage. Android offers a few structured ways to store data. These include [Shared Preferences](/community/tutorials/android-shared-preferences-example-tutorial) Internal Storage [External Storage](/community/tutorials/android-external-storage-read-write-save-file) [SQLite Storage](/community/tutorials/android-sqlite-database-example-tutorial) Storage via Network Connection(on cloud) In this tutorial we are going to look into the saving and reading data into files using Android Internal Storage. Android Internal Storage […]
Introduction Deploying configure fluentd log collector on debian 9 on a Debian 9 Stretch machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites Ensure Debian […]
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2022-6449 Related CVEs: CVE-2021-3807 CVE-2022-32213 CVE-2022-32212 CVE-2022-32214 CVE-2022-32215 CVE-2022-33987 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]
🟠 High ⏱ 5–30 min Last verified: 20 May 2026 Affected versions: Ubuntu 18.04 LTS 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]
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