Debugging on Droplets with perf, bpftrace, and System Tools
Learn how to debug Linux performance using perf, bpftrace, valgrind, and system tools on a cloud servers to find and fix bottlenecks.
How to Create and Manage Group Policy Objects on Windows Server 2016
How to Configure Windows Server 2016 Group Policy Objects Group Policy Objects (GPOs) are one of the most powerful administrative tools in Windows Server 2016. A GPO is a collection of settings that define how a system behaves for users and computers. GPOs can enforce security policies, deploy software, configure user environments, manage Windows Firewall, […]
How To Install ProcessWire on an Ubuntu VPS
ProcessWire is a flexible, open-source PHP Content Management System. It is easy to update for clients and a pleasure to work with for developers. Here’s how to install ProcessWire on an Ubuntu VPS.
openSUSE Tumbleweed — blueman — vulnerability — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read • Source: SUSE advisory openSUSE-SU-2020:1997-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-15238 Upstream summary: Blueman is a GTK+ Bluetooth Manager. In Blueman before 2.1.4, the DhcpClient method of the D-Bus interface to blueman-mechanism is prone to […]
How To Install MySQL on Ubuntu 16.04
MySQL is an open-source database management system, commonly installed as part of the popular LAMP (Linux, Apache, MySQL, PHP/Python/Perl) stack. It uses a relational database and SQL (Structured Query Language) to manage its data.
Ubuntu 20.04 — velocity-tools — vulnerability — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 15 April 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read • Source: Ubuntu Security Notice USN-6282-1 Related CVEs: CVE-2020-13959 Upstream summary: Jackson Henry discovered that Velocity Tools incorrectly handled certain inputs. If a user or an automated system were tricked into opening a specially crafted […]
Cómo instalar Git en Ubuntu 20.04
Los sistemas de control de versiones como Git son imprescindibles para las prácticas recomendadas del desarrollo de software moderno. El control de versiones le permite realizar un seguimiento de su software a nivel de fuente. Puede rastrear cambios, volver a etapas anteriores…
Arch Linux — kpmcore — vulnerability — patch and remediation guide
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read • Source: Arch ASA ASA-202010-8 Related CVEs: CVE-2020-27187 Upstream summary: Type: privilege escalation. Status: Fixed. Affected: 4.1.0-1. Fixed in: 4.2.0-1. Group: AVG-1253. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis […]
Oracle Linux 8 — java-1.8.0-openjdk — vulnerability — patch and remediation guide (ELSA-2020-1515)
🟠 High ⏱ 15–60 min Last verified: 15 April 2021 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2020-1515 Related CVEs: CVE-2020-2830 CVE-2020-2800 CVE-2020-2755 CVE-2020-2781 CVE-2020-2773 CVE-2020-2803 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]
How To Build a Neural Network to Recognize Handwritten Digits with TensorFlow
Neural networks are used as a method of deep learning, one of the many subfields of artificial intelligence. They were first proposed around 70 years ago, as an attempt at simulating the way the human brain works, though in a much more simplified form. Individual ‘neurons’ are…
