October 2020 - Page 28 of 69

How to Install OpenShift CLI on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Install OpenShift CLI on Oracle Linux 8

Introduction This tutorial demonstrates how to Install OpenShift CLI on Oracle Linux 8 on Oracle Linux 8. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered Oracle Linux 8 system with the default […]

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How To Manage Backups to the Cloud with Duplicacy — step-by-step DevOps tutorial on Progressive Robot

How To Manage Backups to the Cloud with Duplicacy

This tutorial provides a high-level overview of how to install the CLI version of Duplicacy and use it to manage a typical data backup process with a the cloud provider Space. It also demonstrates how to back up a shared repository from multiple Droplets to the same Space, as well as how to back up snapshots to multiple Spaces for greater data security.

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Ubuntu 16.04 — luajit — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — luajit — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4501-1 Related CVEs: CVE-2020-15890 Upstream summary: It was discovered that an out-of-bounds read existed in LuaJIT. An attacker could use this to cause a denial of service (application crash) or […]

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Lesen und Einrichten von Umgebungs- und Shell-Variablen unter Linux — step-by-step Linux tutorial on Progressive Robot

Lesen und Einrichten von Umgebungs- und Shell-Variablen unter Linux

In Linux-Systemen werden Umgebungs- und Shell-Variablen verwendet, um Betriebsbedingungen für die Shell zu bestimmen. Sie können an untergeordnete Prozesse übergeben und verwendet werden, um Optionen festzulegen und bestimmte Informationen für Prozesse verfügbar zu machen, die in der Sitzung gestartet werden. In diesem Leitfaden werden wir über das Lesen, Ändern, Erstellen und Zerstören von Umgebungs- und Shell-Variablen sprechen.

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Ubuntu 18.04 — gthumb — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — gthumb — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5681-1 Related CVEs: CVE-2018-18718 CVE-2019-20326 CVE-2020-36427 Upstream summary: It was discovered that gThumb did not properly managed memory under certain circumstances. An attacker could possibly use this issue to cause […]

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How to Deploy a Flask App with Gunicorn on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Deploy a Flask App with Gunicorn on FreeBSD 12

Introduction This guide explains how to Deploy a Flask App with Gunicorn on FreeBSD 12 on FreeBSD 12. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum […]

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