Package Management

How to Configure NFS v4 on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Configure NFS v4 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 configure nfs v4 on ibm aix 7.2 on IBM […]

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Ubuntu 20.04 — ant — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — ant — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 26 August 2020 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4874-1 Related CVEs: CVE-2020-1945 Upstream summary: It was discovered that Apache Ant created temporary files with insecure permissions. An attacker could use this vulnerability to read sensitive information leaked into […]

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Common Problems 118421

Ubuntu 16.04 LTS – apt lock contention from unattended-upgrades blocks installs – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 25 August 2020 Affected versions: Ubuntu 16.04 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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How to Install Packer on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Install Packer on FreeBSD 12

Introduction FreeBSD 12 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up install packer on freebsd 12 on FreeBSD 12 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from any Linux distribution. This […]

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How to Configure Process Resource Manager on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Configure Process Resource Manager 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 configure process resource manager on ibm aix 7.2 on […]

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How to Install Packer Image Builder on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Install Packer Image Builder on Debian 10

Introduction Debian 10 Buster is built around the ethos of stability and free software. Setting up install packer image builder on debian 10 on Buster leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Buster freeze. Follow each step carefully and […]

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Arch Linux — sqlite — vulnerability — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — sqlite — 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-202006-11 Related CVEs: CVE-2020-13871 Upstream summary: Type: arbitrary code execution. Status: Fixed. Affected: 3.32.2-1. Fixed in: 3.32.3-1. Group: AVG-1182. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Common Problems 121489

Debian 9 NO_PUBKEY Signature Verification Failure

🟠 High   ⏱ 5–30 min  Last verified: 24 August 2020 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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Arch Linux — python-cryptography — vulnerability — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — python-cryptography — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202102-36 Related CVEs: CVE-2020-36242 Upstream summary: Type: incorrect calculation. Status: Fixed. Affected: 3.3.1-1. Fixed in: 3.4-1. Group: AVG-1541. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis […]

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How to Set Up SLES 12 in Oracle Cloud Infrastructure — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Set Up SLES 12 in Oracle Cloud Infrastructure

Introduction This tutorial covers How to Set Up SLES 12 in Oracle Cloud Infrastructure on SLES 12. SLES 12 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 12 system is up to date: […]

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