Linux

How To Install Ruby on Rails with rbenv on Ubuntu 16.04 — step-by-step Linux tutorial on Progressive Robot

How To Install Ruby on Rails with rbenv on Ubuntu 16.04

Ruby on Rails is one of the most popular application stacks for developers looking to create sites and web apps. You can easily install Ruby and Rails with the command-line tool rbenv. Using rbenv will provide you with a solid environment for developing your Ruby on Rails applications as it will let you easily switch Ruby versions, keeping your entire team on the same version.

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Debian 10 — tcpdump — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — tcpdump — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 23 November 2020 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-10103 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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Oracle Linux 8 — systemd — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — systemd — security and stability fixes — required update (ELSA-2023-0837)

🟡 Medium   ⏱ 10–30 min  Last verified: 22 November 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-0837 Related CVEs: CVE-2022-4415 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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openSUSE Tumbleweed — speex — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — speex — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2021:1538-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-23903 Upstream summary: A Divide by Zero vulnerability in the function static int read_samples of Speex v1.2 allows attackers to cause a denial of service […]

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How to Create and Manage Swap Space on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Create and Manage Swap Space on RHEL 7

How to Create and Manage Swap Space on RHEL 7 Swap space is a designated area on disk that the Linux kernel uses as an overflow when physical RAM is exhausted. While swap is not a substitute for adequate RAM — disk I/O is orders of magnitude slower than memory access — it is a […]

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Debian 10 — network-manager-ssh — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — network-manager-ssh — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 November 2020 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-9355 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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How To Install VMWare Zimbra Open Source on a cloud servers — step-by-step Linux tutorial on Progressive Robot

How To Install VMWare Zimbra Open Source on a cloud servers

Zimbra is an easy to use piece of unified collaboration software. Being one of the best free, open source collaboration software available, Zimbra includes email, calendaring, file sharing, activity streams, social communities and much more! Zimbra comes in two different forms: a free open source edition and a paid version.

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How To Deploy a Go Web Application Using Nginx on Ubuntu 18.04 — step-by-step Linux tutorial on Progressive Robot

How To Deploy a Go Web Application Using Nginx on Ubuntu 18.04

In this tutorial, you will build a “Hello World” web application in Go and deploy it on an Ubuntu 18.04 server using Nginx as a reverse proxy. Go is a general-purpose programming language that is gradually becoming one of the most popular web back-end programming languages. Nginx is one of the most used web servers in the world due to its lightweight resource usage and its reliability under load.

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