Tooltips with Bootstrap
Quick snippet on using tooltips in Twitter Bootstrap.
How to Install Composer on RHEL 8
Composer is the de facto dependency manager for PHP, used by virtually every modern PHP framework and library including Laravel, Symfony, and Guzzle. It resolves and installs packages from Packagist, handles autoloading, and tracks version constraints so your project dependencies stay consistent across environments. This tutorial covers installing Composer on RHEL 8 using the official […]
Ubuntu 16.04 LTS – GRUB update fails and kernel entry is missing – Fix & Prevention
🟠 High ⏱ 5–30 min Last verified: 7 November 2022 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 […]
Ubuntu 22.04 microphone not recording
🟡 Medium ⏱ 5–30 min Last verified: 7 November 2022 📖 ~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 […]
IBM AIX 7.3 — CVE-2022-22485 — vulnerability — patch and remediation guide
🟡 Medium ⏱ 15–45 min Last verified: 7 November 2022 Affected versions: IBM AIX 7.3 📖 ~4 min read • Source: NVD CVE-2022-22485, IBM Support Bulletin CVE: CVE-2022-22485 NVD summary: In some cases, an unsuccessful attempt to log into IBM Spectrum Protect Operations Center 8.1.0.000 through 8.1.14.000 does not cause the administrator's invalid sign-on […]
Windows Server 2022 — IIS ARR reverse proxy returning 502.3 timeout errors — Fix & Prevention
🟠 High ⏱ 5–30 min Last verified: 7 November 2022 Affected versions: Windows Server 2022 📖 ~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 […]
How to Configure Role-Based Access Control (RBAC) on IBM AIX 7.3
Introduction IBM AIX 7.3 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 7.3 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure role-based access control (rbac) on IBM AIX 7.3 […]
Debian 11 — libxcrypt — vulnerability — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 7 November 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2011-2483 Upstream summary: crypt_blowfish before 1.1, as used in PHP before 5.3.7 on certain platforms, PostgreSQL before 8.4.9, and other products, does not properly handle 8-bit characters, which […]
Debian 11 — rust-libflate — vulnerability — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 7 November 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2019-15552 Upstream summary: An issue was discovered in the libflate crate before 0.1.25 for Rust. MultiDecoder::read has a use-after-free, leading to arbitrary code execution. Table of contents Symptom […]
Usando uma CDN para Acelerar a Entrega de Conteúdo Estático
Websites e aplicações modernas geralmente entregam uma quantidade significativa de conteúdo estático para os usuários finais. Este conteúdo inclui imagens, folhas de estilo, JavaScript, e vídeo. À medida que esses recursos estáticos aumentam em número e tamanho, o uso da largura…
