Every HTML element is organized in a rendered HTML document as a rectangular shape, and the box model is the rule set a browser uses to determine an element’s size and how it interacts with other elements. In this tutorial you will use the margin, padding, border, width, and height properties, which are the primary properties the box model uses. You will also work with the box-sizing properties to understand how the box model can be changed.
This tutorial covers creating a simple web application on a two-tier CentOS 7 architecture using a “ground-up” approach. I.e. creating the a database tier first, then the web server. The site will be powered by an Nginx web server running PHP code that talks to a PostgreSQL database. We will call this configuration a LEPP (Linux, Nginx, PHP, PostgreSQL) stack.
WordPress — бесплатная система управления контентом (CMS) с открытым исходным кодом, которая опирается на базу данных…
🟠 High ⏱ 15–60 min Last verified: 6 April 2021 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2020-5562-1 Related CVEs: CVE-2020-26974 CVE-2020-35113 CVE-2020-26971 CVE-2020-26978 CVE-2020-16042 CVE-2020-26973 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read • Source: AlmaLinux ALSA ALEA-2021:4331 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 […]
In this tutorial you will build a Slackbot in the Python programming language. As a fun proof-of-concept that will demonstrate the power of Python and its Slack APIs, you will build a `CoinBot`–a Slackbot that monitors a channel and, when triggered, will flip a coin and give you the results. You can then modify your `CoinBot` to fulfill any number of _slightly_ more practical applications.
Learn how to create a web scraper using Puppeteer, Docker containers, and the an app platform.
How to Install and Configure Memcached on RHEL 7 Memcached is a high-performance, distributed memory object caching system used to speed up dynamic web applications by reducing database load. It stores frequently requested data — such as database query results, session data, and rendered page fragments — in RAM, allowing subsequent requests to be served […]
🟡 Medium ⏱ 10–30 min Last verified: 5 April 2021 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2023-7165 Related CVEs: CVE-2023-32324 CVE-2023-34241 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]
🟡 Medium ⏱ 5–30 min Last verified: 5 April 2021 Affected versions: Windows Server 2012 R2 📖 ~2 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 […]
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