2020 - Page 341 of 735

Установка Python 3 и настройка среды программирования на сервере Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

Установка Python 3 и настройка среды программирования на сервере Ubuntu 20.04

Язык программирования Python приобретает все большую популярность как среди новичков, так и среди опытных разработчиков. Гибкий и универсальный Python отлично подходит для создания скриптов, автоматизации, анализа данных, машинного обучения и разработки серверных компонентов…

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Android Shared Preferences Example Tutorial — step-by-step DevOps tutorial on Progressive Robot

Android Shared Preferences Example Tutorial

In this tutorial we'll use Shared Preferences in our android application to store data in the form of key-value pair. n Android Shared Preferences Overview Shared Preferences allows activities and applications to keep preferences, in the form of key-value pairs similar to a Map that will persist even when the user closes the application. Android […]

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Common Problems 121538

TLS Handshake Errors From Outdated CA Certificates

🟠 High   ⏱ 5–30 min  Last verified: 12 July 2020 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 & […]

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Common Problems 117456

Ubuntu 20.04 LTS – SSH key authentication fails after hardening changes – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 12 July 2020 Affected versions: Ubuntu 20.04 LTS 📖 ~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 […]

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How to Install OpenJDK 11 on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Install OpenJDK 11 on Debian 10

Introduction Deploying install openjdk 11 on debian 10 on a Debian 10 Buster machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites Before you begin, […]

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Alpine Linux edge — snmptt — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — snmptt — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 1.4.2-r0 📖 ~4 min read  •  Source: Alpine secdb entry — snmptt 1.4.2-r0 Related CVEs: CVE-2020-24361 Upstream summary: Alpine main repository for vedge ships snmptt 1.4.2-r0 which addresses CVE-2020-24361. Table of contents Symptom & Impact Environment […]

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