ubuntu

Common Problems 118630

Ubuntu 16.04 LTS GRUB update fails after manual disk layout changes

🔴 Critical   ⏱ 5–30 min  Last verified: 15 January 2021 Affected versions: 16.04 📖 ~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 […]

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Common Problems 117398

Ubuntu 20.04 LTS – apt update fails because dpkg lock is held

🟠 High   ⏱ 5–30 min  Last verified: 15 January 2021 Affected versions: Ubuntu 20.04 LTS Ubuntu 20.04 Ubuntu 20.04.6 📖 ~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 […]

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Installing WordPress on Ajenti V — step-by-step Linux tutorial on Progressive Robot

Installing WordPress on Ajenti V

Ajenti is an open source, web-based control panel that can be used for a large variety of server management tasks. In this tutorial we will install a WordPress blog, using the tools Ajenti V provides.

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How To Use kpcli To Manage KeePass2 Password Files on an Ubuntu 14.04 Server — step-by-step Linux tutorial on Progressive Robot

How To Use kpcli To Manage KeePass2 Password Files on an Ubuntu 14.04 Server

Using a password manager allows you to create and keep track of complex passwords for your various accounts, which allows you to implement better security practices easier. KeePass2 is a piece of software that lets you create your own password database files for managing this information. In this guide, we’ll look at a tool called `kpcli` which will allow you to create and manipulate KeePass2 database files in a server environment from the command line.

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How To Upgrade to Ubuntu 20.04 Focal Fossa — step-by-step Linux tutorial on Progressive Robot

How To Upgrade to Ubuntu 20.04 Focal Fossa

The Ubuntu operating system’s latest Long Term Support (LTS) release, Ubuntu 20.04 (Focal Fossa), was released on April 23, 2020. This guide will explain how to upgrade an Ubuntu system of version 18.04 or later to Ubuntu 20.04.

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Common Problems 119001

Ubuntu 14.04 LTS failed to fetch archive packages with 404 Not Found

🟡 Medium   ⏱ 5–30 min  Last verified: 13 January 2021 Affected versions: 14.04 14.04.6 📖 ~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 118416

Ubuntu 16.04 LTS – apt update shows NO_PUBKEY signature failures

🟠 High   ⏱ 5–30 min  Last verified: 13 January 2021 Affected versions: Ubuntu 16.04 LTS Ubuntu 16.04 Ubuntu 16.04.7 📖 ~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 […]

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Ubuntu 20.04 — libpodofo — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — libpodofo — multiple vulnerabilities (10 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 13 January 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7217-1 Related CVEs: CVE-2017-5886 CVE-2018-11255 CVE-2018-12983 CVE-2018-20797 CVE-2018-5308 CVE-2018-8002 CVE-2019-10723 CVE-2020-18971  +2 more Upstream summary: It was discovered that the PoDoFo library could dereference a NULL pointer when getting the […]

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