2019 - Page 16 of 527

How to Sync Time with Chrony on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Sync Time with Chrony on RHEL 8

Accurate system time is essential for security certificates, log correlation, scheduled jobs, and Kerberos authentication. RHEL 8 ships with Chrony as its default NTP implementation, replacing the older ntpd daemon. Chrony is faster to synchronize on startup, handles intermittent network connections well, and is better suited to virtual machines. This guide covers installing and configuring […]

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openSUSE Tumbleweed — groff — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — groff — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2009-5044 CVE-2009-5080 CVE-2009-5081 Upstream summary: contrib/pdfmark/pdfroff.sh in GNU troff (aka groff) before 1.21 allows local users to overwrite arbitrary files via a symlink attack on […]

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Como indexar e fatiar strings em Python 3 — step-by-step Python tutorial on Progressive Robot

Como indexar e fatiar strings em Python 3

O tipo de dados string do Python é uma sequência composta por um ou mais caracteres individuais, que consistem em letras, números, caracteres de espaço em branco ou símbolos. As strings são sequências e podem ser acessadas das mesmas maneiras que outros tipos de dados baseados em sequências, através da indexação e divisão. Este tutorial ensinará como acessar strings através da indexação e como dividir suas sequências de caracteres; ele também abordará métodos de contagem e localização de caracte

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Como Instalar o Nginx no Ubuntu 16.04 — step-by-step Linux tutorial on Progressive Robot

Como Instalar o Nginx no Ubuntu 16.04

O Nginx é um dos servidores web mais populares no mundo e é responsável por hospedar alguns dos maiores e mais acessados sites na internet. Ele possui mais facilidades de recursos do que o Apache em muitos casos e pode ser utilizado como servidor web ou proxy reverso. Neste…

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Common Problems 112962

Windows Server 2016 — DHCP scope exhaustion caused by stale reservations and delayed lease reclamation — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 23 December 2019 Affected versions: Windows Server 2016 📖 ~2 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 Configure Cloud-Init on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Configure Cloud-Init on IBM AIX 7.1

Introduction IBM AIX 7.1 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure cloud-init on ibm aix 7.1 on IBM AIX […]

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