In this tutorial, we will begin with understanding RubyGems, the Gem package format, and then learn how to package a Ruby application from start to finish, beginning with creating the package structure to contain the code (and other related material).
O autor selecionou a Open Internet/Free Speech Fund para receber uma doação como parte do programa Write for DOnations. O Jitsi Meet é um aplicativo de…
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2023-12675 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 […]
TimescaleDB is an open-source database optimized for storing time series data. It is implemented as an extension of PostgreSQL and combines the ease-of-use of relational databases and the speed of NoSQL databases. By following this tutorial, you’ll set up TimescaleDB on CentOS 7, configure it, and learn how to work with it. You’ll run through creating time series databases and making simple queries. Finally, you’ll see how to get rid of unnecessary data.
Ruby on Rails (Rails) is a full-stack web application framework built on Ruby that made convention-over-configuration and the MVC pattern mainstream in web development. Rails provides ActiveRecord (ORM), ActionController (routing and controllers), ActionView (templating with ERB/Haml), ActionMailer, ActiveJob (background jobs), ActionCable (WebSockets), and a comprehensive set of security defaults out of the box. A Rails […]
When administering a FreeBSD server, it is important to understand the basic maintenance procedures that will help you keep your server in good shape. In this guide, we will cover the basic procedures needed to keep your server up-to-date and functioning properly. We will cover how to update the base operating system maintained by the FreeBSD team. We will also discuss how to update and maintain optional software installed through the ports or packages systems.
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read • Source: SUSE advisory SUSE-SU-2017:1989-1 (see also SUSE bugzilla) Related CVEs: CVE-2016-5827 CVE-2016-9584 Upstream summary: The icaltime_from_string function in libical 0.47 and 1.0 allows remote attackers to cause a denial of service (out-of-bounds heap read) via […]
🔴 Critical ⏱ 5–30 min Last verified: 19 May 2026 Affected versions: Debian 9 📖 ~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 & […]
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read • Source: Amazon Linux advisory ALAS2-2023-2017 Related CVEs: CVE-2020-2934 Upstream summary: Vulnerability in the MySQL Connectors product of Oracle MySQL (component: Connector/J). Supported versions that are affected are 8.0.19 and prior and 5.1.48 and prior. […]
🟡 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 […]
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