Boot Startup

How to Tune AIX for Oracle Database Performance on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Tune AIX for Oracle Database Performance 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 tune aix for oracle database performance on ibm aix […]

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Initial Server Setup with IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

Initial Server Setup with IBM AIX 7.2

Introduction IBM AIX 7.2 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 7.2 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to server setup with ibm aix 7.2 on IBM AIX […]

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How to Set Up the ELK Stack on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Set Up the ELK Stack on FreeBSD 13

Introduction FreeBSD 13 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up set up the elk stack on freebsd 13 on FreeBSD 13 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from any […]

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How to Configure BitLocker Drive Encryption on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure BitLocker Drive Encryption on Windows Server 2016

How to Set Up Windows Server 2016 BitLocker Drive Encryption BitLocker Drive Encryption is a built-in Windows Server 2016 feature that provides full-volume encryption to protect data at rest. When enabled, BitLocker encrypts the entire volume, preventing unauthorized access to data if drives are physically removed or a server is stolen. This guide covers enabling […]

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How to Install Maven and Gradle on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install Maven and Gradle on RHEL 8

Maven and Gradle are the two dominant build tools in the Java ecosystem, and knowing how to use both gives you flexibility across different project types and team conventions. Maven provides a well-defined project structure and a massive central repository of dependencies, while Gradle offers a Groovy or Kotlin DSL with faster incremental builds and […]

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How to Configure LVM on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Configure LVM on FreeBSD 12

Introduction This guide explains how to Configure LVM 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 for fine-grained privilege separation. […]

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How to Install and Use tmux on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Install and Use tmux on FreeBSD 13

Introduction FreeBSD 13 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up install and use tmux on freebsd 13 on FreeBSD 13 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from any Linux […]

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How to Configure Docker with a Non-Root User on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure Docker with a Non-Root User on Debian 9

Introduction This guide explains how to Configure Docker with a Non-Root User 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 […]

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How to Install phpMyAdmin on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Install phpMyAdmin on FreeBSD 13

Introduction Deploying install phpmyadmin on freebsd 13 on a FreeBSD 13 machine differs from Linux in several important ways: packages come from the FreeBSD Ports Collection or the binary pkg repository, services are registered in /etc/rc.conf via sysrc(8), and firewall rules are written in pf.conf(5) syntax. This tutorial stays entirely within the standard base + […]

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Common Problems 115638

Kernel Updated But Old Kernel Still Running – RHEL 7 Post 140

🟡 Medium   ⏱ 5–30 min  Last verified: 13 July 2021 📖 ~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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