Understanding Big O Notation via JavaScript
Learn the most common terminology for understanding and managing algorithmic complexity, through JavaScript.
Gentoo Linux — app-backup/btrbk — 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-202402-32 Related CVEs: CVE-2021-38173 Upstream summary: A vulnerability has been discovered in btrbk. Please review the CVE identifier referenced below for details. Table of contents Symptom & Impact Environment & Reproduction Root […]
Oracle Linux 8 — httpd:2.4 — vulnerability — patch and remediation guide (ELSA-2021-9545)
🟠 High ⏱ 15–60 min Last verified: 8 June 2021 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2021-9545 Related CVEs: CVE-2021-26690 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]
Oracle Linux 8 — gcc-toolset-10-gcc — vulnerability — patch and remediation guide (ELSA-2021-4585)
🟡 Medium ⏱ 10–30 min Last verified: 8 June 2021 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2021-4585 Related CVEs: CVE-2021-42574 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]
How To Use ApacheBench To Do Load Testing on an Arch Linux VPS
In this tutorial, we will see how a Ruby interpreter with different servers performs under load. The tutorial steps assume a fresh Arch Linux x86_64 image. The results were obtained from a 512 MB droplet.
How to Set Up Windows Server 2019 Hyper-V Containers
How to Set Up Windows Server 2019 Hyper-V Containers Hyper-V containers on Windows Server 2019 provide hardware-level isolation by running each container in a lightweight virtual machine with a dedicated kernel. Unlike process-isolated Windows containers that share the host OS kernel, Hyper-V containers ensure that a compromised container cannot affect the host or other containers. […]
Oracle Linux 8 — cairo and pixman — security and stability fixes — required update (ELSA-2022-1961)
🟡 Medium ⏱ 10–30 min Last verified: 7 June 2021 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2022-1961 Related CVEs: CVE-2020-35492 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]
Debian 9 – Podman image pulls fail due to certificate trust issues
🟡 Medium ⏱ 5–30 min Last verified: 7 June 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 & […]
AlmaLinux 8 — inkscape — vulnerability — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read • Source: AlmaLinux ALSA ALBA-2022:1833 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]
How to Configure Apache mod_security on FreeBSD 13
Introduction This guide explains how to Configure Apache mod_security on FreeBSD 13 on FreeBSD 13. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for fine-grained privilege […]
