SOLID Design Principles Explained: Building Better Software Architecture
Understand SOLID design principles in object-oriented programming to write cleaner, scalable, and maintainable code. A must-read for developers and software engineers.
How To Write Custom System Audit Rules on CentOS 7
The Linux Audit System creates an audit trail, a way to track all kinds of information on your system. It can record a lot of data like types of events, the date and time, user IDs, system calls, processes, files used, SELinux contexts, and sensitivity levels. It can track whether a file has been accessed, edited, or executed. It can even track if changes to file attributes.
Ubuntu 14.04 — pcre3 — multiple vulnerabilities (20 CVEs) — patch and remediation guide
🟠 High ⏱ 15–60 min Last verified: 3 April 2021 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read • Source: Ubuntu Security Notice USN-5425-1 Related CVEs: CVE-2019-20838 CVE-2020-14155 CVE-2014-9769 CVE-2015-2325 CVE-2015-2326 CVE-2015-2327 CVE-2015-2328 CVE-2015-3210 +12 more Upstream summary: Yunho Kim discovered that PCRE incorrectly handled memory when handling certain regular expressions. An attacker […]
Gentoo Linux — media-libs/lib3mf — vulnerability — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read • Source: Gentoo GLSA GLSA-202208-01 Related CVEs: CVE-2021-21772 Upstream summary: Incorrect memory handling within lib3mf could result in a use-after-free. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis […]
How to Configure Ceph Cluster on Oracle Linux 8
Introduction Oracle Linux 8 ships with a stable, security-hardened base that makes deploying configure ceph cluster on oracle linux 8 both straightforward and auditable. This tutorial covers the complete procedure for how to Configure Ceph Cluster on Oracle Linux 8, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for […]
![Cómo instalar Nginx en Ubuntu 20.04 [Guía de inicio rápido] — step-by-step Linux tutorial on Progressive Robot](https://www.progressiverobot.com/wp-content/uploads/2026/05/how-to-install-nginx-on-ubuntu-20-04-quickstart-es-81952-featured.png "Cómo instalar Nginx en Ubuntu 20.04 [Guía de inicio rápido] 6")
Cómo instalar Nginx en Ubuntu 20.04 [Guía de inicio rápido]
Nginx es uno de los servidores web más populares del mundo y aloja algunos de los sitios más grandes y con mayor tráfico en Internet. Es más fácil de utilizar que Apache en la mayoría de los casos y puede emplearse como servidor web o proxy inverso. En esta guía, le…
How To Choose an Effective Backup Strategy
When dealing with any kind of important data, it is essential that you implement a backup scheme. There are many different ways to back up data on a VPS. In this guide, we will discuss some ways that you can backup your data and discuss the merits of the different options.
Constructing Neural Networks From Scratch: Part 1
Learn how to construct neural networks from scratch with NumPy, and simultaneously see how the internal mechanisms behind popular libraries like PyTorch and Keras are implemented.
Oracle Linux 8 — libexif — vulnerability — patch and remediation guide (ELSA-2020-2550)
🟡 Medium ⏱ 10–30 min Last verified: 3 April 2021 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2020-2550 Related CVEs: CVE-2020-13112 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]
Como Construir uma Rede Neural para Reconhecer Dígitos Manuscritos com o TensorFlow
Redes neurais são usadas como um método de deep learning ou aprendizado profundo, um dos vários subcampos da inteligência artificial. Elas foram propostas pela primeira vez há cerca de 70 anos como uma tentativa de simular a maneira como o cérebro humano funciona, embora de uma…
