Security Hardening

How to Use AIX Object Data Manager (ODM) on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Use AIX Object Data Manager (ODM) on IBM AIX 7.2

Introduction IBM AIX 7.2 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.2 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to use aix object data manager (odm) on ibm aix […]

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How to Install Ruby on Rails on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Install Ruby on Rails on Oracle Linux 8

Introduction This tutorial demonstrates how to Install Ruby on Rails on Oracle Linux 8 on Oracle Linux 8. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered Oracle Linux 8 system with the […]

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How to Run Docker on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Run Docker on IBM AIX 7.2

Introduction IBM AIX 7.2 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.2 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to run docker on ibm aix 7.2 on IBM AIX […]

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

Oracle Linux 8 — gcc — vulnerability — patch and remediation guide (ELSA-2025-1301)

🟡 Medium   ⏱ 10–30 min  Last verified: 16 January 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-1301 Related CVEs: CVE-2020-11023 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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openSUSE Tumbleweed — libtspi1 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — libtspi1 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2020-24332 CVE-2019-18898 Upstream summary: An issue was discovered in TrouSerS through 0.3.14. If the tcsd daemon is started with root privileges, the creation of the […]

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Oracle Linux 8 — dnsmasq — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — dnsmasq — security and stability fixes — required update (ELSA-2022-7633)

🟡 Medium   ⏱ 10–30 min  Last verified: 15 January 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-7633 Related CVEs: CVE-2022-0934 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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Alpine Linux edge — lynx — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — lynx — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 2.8.9_p1-r3 📖 ~4 min read  •  Source: Alpine secdb entry — lynx 2.8.9_p1-r3 Related CVEs: CVE-2021-38165 Upstream summary: Alpine main repository for vedge ships lynx 2.8.9_p1-r3 which addresses CVE-2021-38165. Table of contents Symptom & Impact Environment […]

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Common Problems 121594

Debian 9 – DNS resolution fails with systemd-resolved misconfiguration

🟠 High   ⏱ 5–30 min  Last verified: 15 January 2021 Affected versions: Debian 9 📖 ~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 118630

Ubuntu 16.04 LTS GRUB update fails after manual disk layout changes

🔴 Critical   ⏱ 5–30 min  Last verified: 15 January 2021 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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