July 2020 - Page 12 of 69

Common Problems 115982

Ubuntu 26.04 LTS – Wi-Fi adapter not detected after install – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Ubuntu 26.04 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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Common Problems 115907

apt lock contention blocks unattended and manual installs

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Ubuntu 26.04 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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Ubuntu 16.04 — xawtv — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — xawtv — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4518-1 Related CVEs: CVE-2020-13696 Upstream summary: Matthias Gerstner discovered that xawtv incorrectly handled opening files. A local attacker could possibly use this issue to open and write to arbitrary files […]

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Common Problems 113476

Windows Server 2012 R2 – Endpoint filter driver deadlock blocks file and network I/O – Fix and Prevention

🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Windows Server 2012 R2 📖 ~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 […]

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Información sobre las bases de datos relacionales — step-by-step DevOps tutorial on Progressive Robot

Información sobre las bases de datos relacionales

Los sistemas de administración de bases de datos (DBMS) son programas que permiten a los usuarios interactuar con una base de datos. Les permiten controlar el acceso a una base de datos, escribir datos, ejecutar consultas y realizar otras tareas relacionadas con la…

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Trie Data Structure in C/C++ — step-by-step Programming tutorial on Progressive Robot

Trie Data Structure in C/C++

URL: https://www.progressiverobot.com/trie-data-structure-in-c-plus-plus/ A Trie data structure acts as a container for a dynamic array. In this article, we shall look at how we can implement a Trie in C/C++. This is based on the tree data structure but does not necessarily store keys. Here, each node only has a value, which is defined based on […]

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How to Configure GEOM Mirroring on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Configure GEOM Mirroring on FreeBSD 12

Introduction Deploying configure geom mirroring 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 entirely within the standard base […]

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NodeJS Export and Import Modules — step-by-step Javascript tutorial on Progressive Robot

NodeJS Export and Import Modules

URL: https://www.progressiverobot.com/nodejs-export-and-import-modules/ In my previous posts, we have discussed about "[How to install Enide Studio 2014 IDE](/community/tutorials/node-js-basic-examples-with-node-cli-and-node-ide "Node JS Basic Examples With Node REPL (CLI) and Node IDE")" and also "How to create a Node JS Application". Before discussing about "How to create new Node JS Modules and How to reuse them in other Node […]

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