Linux

How To Install Wordpress on Arch Linux — step-by-step Linux tutorial on Progressive Robot

How To Install WordPress on Arch Linux

Wordpress is a free and open source website and blogging tool that uses php and MySQL. It was created in 2003 and has since then expanded to manage 22% of all the new websites created and has over 20,000 plugins to customize its functionality. This tutorial shows how to install Wordpress on a server with LAMP. It is written for Arch Linux.

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Oracle Linux 9 — ncurses — security and stability fixes — required update — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — ncurses — security and stability fixes — required update (ELSA-2023-6698)

🟡 Medium   ⏱ 10–30 min  Last verified: 19 February 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-6698 Related CVEs: CVE-2023-29491 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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Common Problems 119073

Ubuntu 14.04 LTS swap not activating at boot

🟡 Medium   ⏱ 5–30 min  Last verified: 19 February 2023 📖 ~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 & Cross-Refs References & Further […]

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Common Problems 118494

Ubuntu 16.04 LTS sudo command fails due to corrupted /etc/sudoers

🔴 Critical   ⏱ 5–30 min  Last verified: 19 February 2023 Affected versions: 16.04 📖 ~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 & Cross-Refs […]

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How to Install and Configure Envoy Proxy on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Install and Configure Envoy Proxy on RHEL 9

Envoy is a high-performance, cloud-native L4/L7 proxy designed for service mesh architectures and API gateway deployments. Originally built by Lyft, it is the data plane of Istio and is used by organisations running microservices on Kubernetes and bare metal alike. Unlike Nginx or HAProxy, Envoy is designed to run as a sidecar alongside each service, […]

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AlmaLinux 9 — logrotate — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 9

AlmaLinux 9 — logrotate — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 9 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2022:8393 Related CVEs: CVE-2022-1348 Upstream summary: The logrotate utility simplifies the administration of multiple log files by allowing their automatic rotation, compression, removal, and mailing. Security Fix(es): * logrotate: potential DoS from […]

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Common Problems 117617

Ubuntu 20.04 LTS – cron jobs fail silently due to environment path mismatch – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 19 February 2023 Affected versions: Ubuntu 20.04 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 — exo — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — exo — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 19 February 2023 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6008-1 Related CVEs: CVE-2022-32278 Upstream summary: It was discovered that Exo did not properly sanitized desktop files. A remote attacker could possibly use this issue to to cause a crash […]

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

Oracle Linux 8 — grafana — vulnerability — patch and remediation guide (ELSA-2023-2784)

🟡 Medium   ⏱ 10–30 min  Last verified: 19 February 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-2784 Related CVEs: CVE-2022-41715 CVE-2022-2880 CVE-2022-39229 CVE-2022-27664 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches […]

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How To Integrate MongoDB with Your Node Application — step-by-step Linux tutorial on Progressive Robot

How To Integrate MongoDB with Your Node Application

In the process of working with Node.js, you may find yourself developing a project that stores and queries data. This tutorial will show you how to integrate MongoDB with an existing Node application. This process will involve adding user and database information to your application code and using the Object Document Mapper Mongoose. At the end of the tutorial, you will have a working application that will take a user’s input and display it in the browser.

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