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How to Install Maven on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Install Maven on Debian 13

Introduction How to Install Maven on Debian 13 is a fundamental operation for any administrator maintaining a Debian 13 Trixie server. Debian 13 Trixie ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 12. This tutorial […]

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Oracle Linux 8 — libssh — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — libssh — vulnerability — patch and remediation guide (ELSA-2025-21977)

🟡 Medium   ⏱ 10–30 min  Last verified: 8 October 2025 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-21977 Related CVEs: CVE-2025-5372 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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How To Install MariaDB on Rocky Linux 9 — step-by-step Linux tutorial on Progressive Robot

How To Install MariaDB on Rocky Linux 9

MariaDB is an open-source database management system, commonly used as an alternative for the MySQL portion of the popular LAMP (Linux, Apache, MySQL, PHP/Python/Perl) stack. It is intended to be a drop-in replacement for MySQL. This tutorial will explain how to install MariaDB on a Rocky Linux 9 server, and verify that it is running and has a safe initial configuration.

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Windows Server 2019 — KB5066875 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2019

Windows Server 2019 — KB5066875 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2019 📖 ~4 min read  •  Source: Microsoft KB5066875 • MSRC update-guide entry Related CVEs: CVE-2016-9535 CVE-2025-24990 CVE-2025-24052 CVE-2025-55335 CVE-2025-55687 CVE-2025-55700 CVE-2025-55701 CVE-2025-58717  +12 more Affected components: Windows Server 2019 (Server Core installation) Microsoft summary: tif_predict.h and tif_predict.c in libtiff […]

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How to Configure PostgreSQL Streaming Replication on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Configure PostgreSQL Streaming Replication on Debian 13

Introduction How to Configure PostgreSQL Streaming Replication on Debian 13 is a fundamental operation for any administrator maintaining a Debian 13 Trixie server. Debian 13 Trixie ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 12. […]

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SLES 15 — gnuplot — multiple vulnerabilities (14 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — gnuplot — multiple vulnerabilities (14 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 8 October 2025 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2020-25412 CVE-2025-31176 CVE-2025-31177 CVE-2025-31178 CVE-2025-31179 CVE-2025-31180 CVE-2025-31181 CVE-2025-3359  +6 more Upstream summary: com_line() in command.c in gnuplot 5.4 leads to an out-of-bounds-write from strncpy() that […]

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How to Build Scalable Web Applications from Scratch

Build Scalable Web Applications That Last: The Powerful 2025 Developer Playbook

Scalable web applications are the foundation of lasting digital success, yet many fail to reach their potential. In April 2025, there are over 1.5 billion web solutions in existence—but fewer than 200 million are active. The harsh reality: many web applications never reach full potential. A user forms an impression of a site in about 50 milliseconds, and 76 % of consumers abandon a web experience if they cannot quickly find what they want. 

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How to Set Up Port Knocking on Oracle Linux 10 — step-by-step Oracle Linux 10 tutorial on Progressive Robot

How to Set Up Port Knocking on Oracle Linux 10

Introduction Setting up set up port knocking on oracle linux 10 on a Oracle Linux 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Set Up Port Knocking on Oracle Linux 10, with all the commands you need, the SELinux and firewalld considerations to […]

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