Linux

How To Set Up a Video Streaming Server using Nginx-RTMP on Ubuntu 22.04 — step-by-step Linux tutorial on Progressive Robot

How To Set Up a Video Streaming Server using Nginx-RTMP on Ubuntu 22.04

There are many use cases for streaming video. Service providers such as Twitch have become very popular for handling the community management aspects of streaming, and free software such as OBS is widely used for combining video from multiple stream sources. While these platforms are very powerful, in some cases you may want to be able to host a stream that does not rely on other service providers. In this tutorial, you will learn how to use Nginx to host an independent RTMP video stream.

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How to Install Composer on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

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 […]

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Common Problems 118543

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 […]

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Common Problems 117052

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 […]

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Debian 11 — libxcrypt — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

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 […]

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Debian 11 — rust-libflate — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

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 […]

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Gentoo Linux — sys-apps/util-linux — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — sys-apps/util-linux — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202401-08 Related CVEs: CVE-2021-3995 CVE-2021-3996 CVE-2021-37600 CVE-2022-0563 Upstream summary: Multiple vulnerabilities have been discovered in util-linux. Please review the CVE identifiers referenced below for details. Table of contents Symptom & Impact Environment […]

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Debian 11 — yodl — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — yodl — 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-2016-10375 Upstream summary: Yodl before 3.07.01 has a Buffer Over-read in the queue_push function in queue/queuepush.c. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis […]

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