Linux

How to Use Python Virtual Environments on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Use Python Virtual Environments on RHEL 7

How to Use Python Virtual Environments on RHEL 7 When you install Python packages system-wide with pip3, every project on the server shares the same set of libraries. This creates an immediate problem: Project A requires Flask 1.1 while Project B requires Flask 2.3, and only one version can occupy the global site-packages directory at […]

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How to Set Up CentOS Stream 9 with Podman in Rootless Mode — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Set Up CentOS Stream 9 with Podman in Rootless Mode

Introduction How to Set Up CentOS Stream 9 with Podman in Rootless Mode on CentOS Stream 9 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the […]

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AlmaLinux 8 — spice-gtk — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — spice-gtk — 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-2021:1821 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 […]

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How to Take a System Snapshot with Timeshift on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Take a System Snapshot with Timeshift on Debian 11

Introduction How to Take a System Snapshot with Timeshift on Debian 11 is a fundamental operation for any administrator maintaining a Debian 11 Bullseye server. Debian 11 Bullseye ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from […]

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Debian 11 — game-music-emu — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — game-music-emu — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 1 March 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2016-9957 CVE-2016-9958 CVE-2016-9959 CVE-2016-9960 CVE-2016-9961 CVE-2017-17446 Upstream summary: Stack-based buffer overflow in game-music-emu before 0.6.1. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick […]

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AlmaLinux 8 — python-suds — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — python-suds — 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-2022:1967 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 […]

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Debian 11 — node-fstream — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — node-fstream — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 1 March 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-13173 Upstream summary: fstream before 1.0.12 is vulnerable to Arbitrary File Overwrite. Extracting tarballs containing a hardlink to a file that already exists in the system, and a […]

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Debian 11 — multipath-tools — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — multipath-tools — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 1 March 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-0115 CVE-2022-41973 CVE-2022-41974 Upstream summary: The Device Mapper multipathing driver (aka multipath-tools or device-mapper-multipath) 0.4.8, as used in SUSE openSUSE, SUSE Linux Enterprise Server (SLES), Fedora, and possibly […]

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How to Configure Nginx FastCGI Caching on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Configure Nginx FastCGI Caching on RHEL 7

How to Configure Nginx FastCGI Caching on RHEL 7 FastCGI caching in Nginx allows you to store responses from your PHP backend — typically PHP-FPM — directly on disk or in memory, serving subsequent identical requests without re-executing PHP. On a busy RHEL 7 server this can reduce backend load by an order of magnitude, […]

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