December 2020 - Page 53 of 69

How to Install Rsnapshot on Ubuntu 12.04 — step-by-step Linux tutorial on Progressive Robot

How to Install Rsnapshot on Ubuntu 12.04

In this article, we describe how to install and configure Rsnapshot in Ubuntu. Rsnapshot is a remote backup solution based on the rsync protocol which can be used to create scheduled, incremental backups.

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How To Install Jenkins on Ubuntu 18.04 — step-by-step Linux tutorial on Progressive Robot

How To Install Jenkins on Ubuntu 18.04

Jenkins is an open-source automation server that automates the repetitive technical tasks involved in the continuous integration and delivery of software. In this tutorial, you will install Jenkins by adding its Debian package repository, and using that repository to install the package with `apt`.

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Cómo convertir tipos de datos en Go — step-by-step Programming tutorial on Progressive Robot

Cómo convertir tipos de datos en Go

En Go, los tipos de datos se utilizan para clasificar un tipo de dato concreto y determinan los valores que puede asignar al tipo y las operaciones que puede realizar en él. Cuando realice tareas de programación, a veces deberá aplicar conversiones de valores entre tipos para…

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Настройка аутентификации на базе ключей SSH на сервере Linux — step-by-step Linux tutorial on Progressive Robot

Настройка аутентификации на базе ключей SSH на сервере Linux

SSH или защищенная оболочка — самый распространенный способ администрирования удаленных серверов Linux. Хотя демон поддерживает аутентификацию на базе паролей, возможность доступа к защищенной паролем учетной записи через сеть может сделать ваш сервер уязвимым к атакам методом перебора. В этом учебном руководстве мы продемонстрируем, как настраивать сервер с использованием ключей SSH, которые представляют собой рекомендованный метод аутентификации. Злоумышленникам намного сложнее обойти такую за

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Oracle Linux 8 — sqlite — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — sqlite — vulnerability — patch and remediation guide (ELSA-2020-4442)

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-4442 Related CVEs: CVE-2020-13631 CVE-2020-13632 CVE-2019-5018 CVE-2020-9327 CVE-2019-16168 CVE-2019-20218 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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3 Ways to Compare Strings in C++ — step-by-step Programming tutorial on Progressive Robot

3 Ways to Compare Strings in C++

Introduction In this article, you will learn methods to compare strings in C++. Strings in C++ can be compared using one of the following techniques: String strcmp() function built-in compare() function C++ Relational Operators (==, !=) 1. Using the String strcmp() function in C++ C++ String has built-in functions for manipulating data of String type. […]

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Why You Should Learn SQL — step-by-step DevOps tutorial on Progressive Robot

Why You Should Learn SQL

SQL (Structured Query Language) defines, manipulates, and queries data held in relational databases. SQL is used in many industries and with the most popular tools. Even if you don’t use SQL directly, you can still benefit from understanding its concepts. This conceptual article outlines why it’s worth learning SQL and reviews where and how you can apply that knowledge.

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Oracle Linux 8 — spice-vdagent — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — spice-vdagent — security and stability fixes — required update (ELSA-2021-1791)

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-1791 Related CVEs: CVE-2020-25650 CVE-2020-25651 CVE-2020-25652 CVE-2020-25653 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches […]

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Ubuntu 18.04 — highlight.js — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — highlight.js — 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-8276-1 Related CVEs: CVE-2020-26237 Upstream summary: It was discovered that Highlight.js used plain JavaScript objects for internal language name lookups, making them susceptible to prototype pollution attacks. An attacker could […]

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