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How To Install Ruby and Set Up a Local Programming Environment on Windows 10 — step-by-step Programming tutorial on Progressive Robot

How To Install Ruby and Set Up a Local Programming Environment on Windows 10

This tutorial will go over how to set up a Ruby programming environment on your local Windows 10 machine using the command line. You’ll configure Bash on Windows, and then use the Ruby Version Manager—better known as RVM, a software platform built to manage multiple Ruby installations—to install the latest version of Ruby and its prerequisites. Then you’ll test your environment out by writing a simple Ruby program.

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Data Analyst Learning Roadmap For Aspirants In 2022 — step-by-step DevOps tutorial on Progressive Robot

Data Analyst Learning Roadmap For Aspirants In 2022

Want to become a Data Analyst? Big data is set to have a market of $300 Billion in 2022 globally. Data-related roles such as data analyst, data scientist, data engineer, data architect are booming and IT companies are in a huddle to hire such people who are having skills for these roles. One of the major attractions […]

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Oracle Linux 8 — dpdk security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — dpdk security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2020-4806)

🟠 High   ⏱ 15–60 min  Last verified: 12 March 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-4806 Related CVEs: CVE-2020-10722 CVE-2020-10723 CVE-2020-10726 CVE-2020-10725 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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Common Problems 118502

Ubuntu 16.04 Interface Fails to Come Up After /etc/network/interfaces Edit

🟡 Medium   ⏱ 5–30 min  Last verified: 12 March 2021 📖 ~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 115109

RHEL 8 – Postfix Mail Queue Stalls from DNS Resolver Problems

🟡 Medium   ⏱ 5–30 min  Last verified: 12 March 2021 📖 ~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 113002

Windows Server 2016 — BGP route flapping between edge peers and RRAS gateway impacts WAN stability — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 12 March 2021 Affected versions: Windows Server 2016 📖 ~2 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 Zabbix Agent on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Install Zabbix Agent 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 install zabbix agent on ibm aix 7.2 on IBM […]

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Gentoo Linux — mail-filter/opendmarc — vulnerability — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — mail-filter/opendmarc — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202011-02 Related CVEs: CVE-2020-12460 Upstream summary: It was found that OpenDMARC did not properly handle DMARC aggregate reports. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage […]

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FreeBSD 12 — py39-fail2ban — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — py39-fail2ban — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 12 March 2021 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: fail2ban — possible RCE vulnerability in mailing action using mailutils Related CVEs: CVE-2021-32749 Upstream summary: Jakub Żoczek reports: Command mail from mailutils package used in mail actions like mail-whois can […]

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