🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read • Source: Ubuntu Security Notice USN-4055-1 Related CVEs: CVE-2019-13032 CVE-2019-13241 CVE-2019-13453 Upstream summary: Mike Salvatore discovered that FlightCrew improperly handled certain malformed EPUB files. An attacker could potentially use this vulnerability to cause a denial […]
Python-Markdown is a Python library that allows you to convert Markdown text to HTML; it mostly follows the Markdown standard with a few minor differences to the standard Markdown syntax. In this tutorial, you’ll use Flask, SQLite, and Python-Markdown to build a small note-taking web application that supports formatting text using Markdown. The app will allow users to display, create, and format notes with h
This tutorial will explore how to create roles with templates and static files. Once you are familiar with the fundamentals of building roles, we’ll use [Ansible Galaxy](https://galaxy.ansible.com/) to incorporate community contributed roles into playbooks. By the end of this tutorial you will be able to create your own environment specific roles for your servers and use them in your own playbooks.
Alertmanager handles alert routing, deduplication, and notification dispatch for Prometheus. By integrating it with Slack and PagerDuty, your team receives real-time notifications through familiar channels while on-call engineers get paged for critical incidents. This tutorial walks through installing Alertmanager on RHEL 8, configuring receivers for both platforms, setting up routing logic, and verifying the setup […]
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: SLES 15 📖 ~4 min read • Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2011-1946 Upstream summary: gnomesu-pam-backend in libgnomesu 1.0.0 prints an error message but proceeds with the non-error code path upon failure of the setgid or setuid […]
The v-model directive is one of the few directives that comes bundled with Vue.js. This directive allows for two-way data binding between our data and views.
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: Debian 9 (stretch) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2017-14685 CVE-2017-15587 CVE-2017-17866 CVE-2018-6544 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches […]
Best practices for researching, writing, publishing, and sharing inclusive learning materials for all skill levels.
In this tutorial, we'll be discussing Alert Dialogs and implement them in our Android Application using Kotlin. Alert Dialogs Alert Dialog is a window that pops up on the screen. They generally show some information and ask for a user action. There are three core components that build an Alert Dialog. Title Text Message Text […]
Learning how to write modules in Python 3 is one of the most important and practical skills for building clean, reusable, and scalable Python code — modules are simply .py files containing functions, classes, variables, and executable code that you can import and reuse across multiple scripts, turning small scripts into organized, professional applications and libraries.
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