April 2021 - Page 39 of 66

How to Set Up Graylog on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Set Up Graylog on Oracle Linux 8

Introduction How to Set Up Graylog on Oracle Linux 8 on Oracle Linux 8 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 resulting configuration is […]

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How to Return an Array in a C++ Function — step-by-step Programming tutorial on Progressive Robot

How to Return an Array in a C++ Function

URL: https://www.progressiverobot.com/return-array-in-c-plus-plus-function/ Introduction In this tutorial, we are going to understand how we can return an array from a function in C++. Methods to Return an Array in a C++ Function Typically, returning a whole array to a function call is not possible. We could only do it using [pointers](/community/tutorials/pointers-in-c-and-c-plus-plus). Moreover, declaring a function with […]

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

Arch Linux — go — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202011-16 Related CVEs: CVE-2020-28367 CVE-2020-28366 CVE-2020-28362 CVE-2018-16875 CVE-2018-16874 CVE-2018-16873 CVE-2018-6574 CVE-2017-15041  +12 more Upstream summary: Type: multiple issues. Status: Fixed. Affected: 2:1.15.4-1. Fixed in: 2:1.15.5-1. Group: AVG-1278. Table of contents […]

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Ubuntu 18.04 — keystone — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — keystone — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4480-1 Related CVEs: CVE-2020-12689 CVE-2020-12690 CVE-2020-12691 CVE-2020-12692 Upstream summary: It was discovered that OpenStack Keystone incorrectly handled EC2 credentials. An authenticated attacker with a limited scope could possibly create EC2 […]

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How to Configure Btrfs File System on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure Btrfs File System on Debian 9

Introduction How to Configure Btrfs File System on Debian 9 is a fundamental operation for any administrator maintaining a Debian 9 Stretch server. Debian 9 Stretch 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 Debian 9. […]

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