How To Install And Get Started With Sinatra On Your System Or VPS
Sinatra is a simple and lightweight web framework written in Ruby. This article assumes you know basic Ruby and have Ruby and RubyGems installed on your system or cloud server.
![[Краткое] руководство по установке Anaconda в Ubuntu 18.04 — step-by-step Linux tutorial on Progressive Robot](https://www.progressiverobot.com/wp-content/uploads/2026/05/how-to-install-anaconda-on-ubuntu-18-04-quickstart-ru-79010-featured.png "[Краткое] руководство по установке Anaconda в Ubuntu 18.04 2")
[Краткое] руководство по установке Anaconda в Ubuntu 18.04
Anaconda — диспетчер пакетов с открытым исходным кодом, диспетчер среды и средство дистрибуции языков программирования Python и R. Решение Anaconda предназначено для рабочих процессов аналитики данных и машинного обучения. Настоящее обучающее руководство рассказывает об…
Android CountDownTimer Example
In this android countdown timer example, we'll implement a timer object to display the progress in a [ProgressBar](/community/tutorials/android-progressbar-example). The application we'll build in this tutorial is a useful component in Quiz apps where the time left to complete the level is displayed graphically to enhance the user experience. Android CountDownTimer Android CountDownTimer class is used […]
How to Install and Configure Cassandra on Debian 9
Introduction How to Install and Configure Cassandra 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. […]
Oracle Linux 8 — virt:ol and virt-devel:ol security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2022-1759)
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2022-1759 Related CVEs: CVE-2021-20196 CVE-2021-33285 CVE-2021-33286 CVE-2021-33287 CVE-2021-33289 CVE-2021-35266 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]
Ubuntu 18.04 LTS – LVM volume reaches 100 percent causing service failures – Fix & Prevention
🟠 High ⏱ 5–30 min Last verified: 19 May 2026 Affected versions: Ubuntu 18.04 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 […]
rc.local Script Not Executing at Boot
🟡 Medium ⏱ 5–30 min Last verified: 20 May 2026 📖 ~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 […]
SELinux Denies Apache Access To Web Content
🟡 Medium ⏱ 5–30 min Last verified: 19 May 2026 📖 ~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 […]
Arch Linux — wavpack — multiple vulnerabilities (4 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-201802-12 Related CVEs: CVE-2018-7254 CVE-2018-7253 CVE-2018-6767 CVE-2020-35738 Upstream summary: Type: arbitrary code execution. Status: Fixed. Affected: 4.80.0-1. Fixed in: 5.1.0-2. Group: AVG-631. Table of contents Symptom & Impact Environment & […]
How to Configure RRAS on Windows Server 2012 R2
How to Configure RRAS on Windows Server 2012 R2 Routing and Remote Access Service (RRAS) on Windows Server 2012 R2 is a multi-purpose networking role that provides routing, VPN connectivity, and dial-up access services. RRAS can function as a software router supporting static and dynamic routing protocols (RIP v2 and OSPF via add-ons), as a […]
