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How To Select HTML Elements to Style with CSS — step-by-step DevOps tutorial on Progressive Robot

How To Select HTML Elements to Style with CSS

Selecting the right element is the basis of writing CSS code as a web developer. Whenever you need to adjust how an element on a webpage looks, using selectors is key. This tutorial will build your skillset and help you develop visually rich websites by showing you how to select the right element in a given scenario. You will begin by using the type selector to select HTML elements to style. Then, you will combine selectors to identify and apply styles more precisely.

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How To Monitor Your Ubuntu 16.04 System with Sysdig — step-by-step Linux tutorial on Progressive Robot

How To Monitor Your Ubuntu 16.04 System with Sysdig

Sysdig is a comprehensive open source system activity monitoring, capture and analysis application with integrated support for application containers. It features a powerful filtering language with customizable output, and core functionality that can…

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Ubuntu 18.04 — crawl — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — crawl — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7969-1 Related CVEs: CVE-2020-11722 Upstream summary: David Mendenhall discovered that Dungeon Crawl Stone Soup was incorrectly handling Lua bytecode embedded in an uploaded .crawlrc file. An attacker could possibly use […]

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How to Upgrade Oracle Linux 7 to Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Upgrade Oracle Linux 7 to Oracle Linux 8

Introduction Setting up upgrade oracle linux 7 to oracle linux 8 on a Oracle Linux 8 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Upgrade Oracle Linux 7 to Oracle Linux 8, with all the commands you need, the SELinux and firewalld considerations to […]

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Установка MongoDB из репозиториев APT по умолчанию в Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

Установка MongoDB из репозиториев APT по умолчанию в Ubuntu 20.04

MongoDB — бесплатная база данных документов NoSQL с открытым исходным кодом, часто используемая в современных веб-приложениях. Следуя указаниям в этом учебном модуле, вы установите MongoDB на сервере Ubuntu 20.04, используя репозитории APT по умолчанию. Также вы узнаете, как управлять его сервисами и, при необходимости, включать удаленный доступ.

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How To Install Docker Compose on Ubuntu 18.04 — step-by-step Docker tutorial on Progressive Robot

How To Install Docker Compose on Ubuntu 18.04

Docker is a great tool for automating the deployment of Linux applications inside software containers, but to take full advantage of its potential each component of an application should run in its own individual container. For complex applications…

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