Linux

How to Install Gradle Build Tool on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install Gradle Build Tool on Debian 9

Introduction This guide explains how to Install Gradle Build Tool on Debian 9 on Debian 9 Stretch. Debian Stretch uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 9 install with the […]

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Common Problems 115463

RHEL 7 – SELinux AVC Denial Prevents Daemon from Binding Port

🟡 Medium   ⏱ 5–30 min  Last verified: 24 August 2019 📖 ~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 References & Further […]

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How to Monitor Nginx Access Logs with GoAccess on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Monitor Nginx Access Logs with GoAccess on RHEL 8

GoAccess is an open-source, real-time web log analyzer that generates interactive HTML reports and live terminal dashboards directly from Nginx access logs. It requires no database, no JavaScript framework, and no persistent service — a single command can parse millions of log entries in seconds. On RHEL 8 the package is available from the EPEL […]

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Amazon Linux 2 — libsolv — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — libsolv — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2019-1374 Related CVEs: CVE-2018-20532 CVE-2018-20533 CVE-2018-20534 Upstream summary: There is an illegal address access at ext/testcase.c in libsolv.a in libsolv through 0.7.2 that will cause a denial of service. NOTE: […]

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How To Set Up a PageKite Front-End Server on Debian 9 — step-by-step Linux tutorial on Progressive Robot

How To Set Up a PageKite Front-End Server on Debian 9

In this tutorial, you will install and set up a PageKite front-end service on a server running Debian 9. You will also set up two more Debian 9 servers to simulate a local and a remote environment. When you’re finished, you will have set up a server for multiple clients, and tested it with a practical solution for remote access using SSH and VNC. PageKite is a fast and secure tunneling solution that uses HTTP or SSH to expose a service running inside a private network to the public.

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Oracle Linux 8 — java-11-openjdk — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — java-11-openjdk — vulnerability — patch and remediation guide (ELSA-2019-1518)

🟡 Medium   ⏱ 10–30 min  Last verified: 24 August 2019 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-1518 Related CVEs: CVE-2019-2684 CVE-2019-2602 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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Common Problems 118974

Ubuntu 14.04 LTS sudo Stops Working Due to Broken Permissions

🟡 Medium   ⏱ 5–30 min  Last verified: 23 August 2019 📖 ~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 References & Further […]

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openSUSE Tumbleweed — postgresql93 — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — postgresql93 — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2015:0478-1 (see also SUSE bugzilla) Related CVEs: CVE-2014-8161 CVE-2015-0241 CVE-2015-0242 CVE-2015-0243 CVE-2015-0244 Upstream summary: PostgreSQL before 9.0.19, 9.1.x before 9.1.15, 9.2.x before 9.2.10, 9.3.x before 9.3.6, and 9.4.x before 9.4.1 allows remote […]

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