chris

Debian 9 — python-reportlab — vulnerability — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — python-reportlab — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 19 November 2019 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-17626 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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How To Install and Use Composer on Ubuntu 14.04 — step-by-step Linux tutorial on Progressive Robot

How To Install and Use Composer on Ubuntu 14.04

Composer is a popular dependency management tool for PHP, created to facilitate installation and update of project dependencies. It will check which other packages a specific project depends on and install them for you, using the appropriate versions according to the project requirements.

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Debian 9 — openconnect — vulnerability — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — openconnect — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 19 November 2019 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-16239 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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Using the getch() function in C/C++ — step-by-step Programming tutorial on Progressive Robot

Using the getch() function in C/C++

In this article, we'll take a look at using the getch() function in C/C++. The getch() function is very useful if you want to read a character input from the keyboard. While this is not a part of the C standard, this is still a POSIX C function. So, we can still use this function […]

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How to Set Up WireGuard VPN on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Set Up WireGuard VPN on RHEL 8

WireGuard is a modern, high-performance VPN protocol built into the Linux kernel since version 5.6, offering significantly simpler configuration and better performance than older alternatives like OpenVPN or IPsec. On RHEL 8, WireGuard can be installed via the ELRepo kernel module or the wireguard-tools package from EPEL, with the kernel module provided by the elrepo-kernel […]

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Arch Linux — libcurl-gnutls — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — libcurl-gnutls — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201805-18 Related CVEs: CVE-2018-1000301 CVE-2018-1000300 CVE-2019-5436 CVE-2019-3823 CVE-2019-3822 CVE-2018-16890 CVE-2018-16840 CVE-2018-0500  +12 more Upstream summary: Type: multiple issues. Status: Fixed. Affected: 7.59.0-1. Fixed in: 7.60.0-1. Group: AVG-699. Table of contents […]

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Common Problems 115593

RHEL 7 – journald Disk Usage Grows Until /var Is Full

🟡 Medium   ⏱ 5–30 min  Last verified: 18 November 2019 📖 ~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 112410

Windows Server 2019 NTFS MFT Fragmentation Causing Slow File Enumeration – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 18 November 2019 Affected versions: Windows Server 2019 📖 ~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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How to Configure GitLab CI/CD on SLES 15 — step-by-step SUSE Linux Enterprise 15 tutorial on Progressive Robot

How to Configure GitLab CI/CD on SLES 15

Introduction This tutorial covers How to Configure GitLab CI/CD on SLES 15 on SLES 15. SLES 15 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 15 system is up to date: zypper refresh […]

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