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How to Manage Systemd Services with systemctl on Linux: Complete Guide (2025–2026) — step-by-step tutorial on Progressive Robot

How to Manage Systemd Services with systemctl on Linux: Complete Guide (2025–2026)

Manage systemd services with systemctl is one of the most essential skills for any Linux system administrator or DevOps engineer in 2025–2026. Since systemd became the default init system on virtually all major distributions (Ubuntu, Debian, Fedora, CentOS Stream, Rocky Linux, AlmaLinux, and more), the systemctl command is now the central tool for controlling services, checking statuses, modifying boot behavior, and troubleshooting.

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How to Install Deno on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Install Deno on RHEL 9

  • February 4, 2026
  • Linux
  • Comment off

Deno is a modern JavaScript and TypeScript runtime built on V8 and Rust. Created by Ryan Dahl (the original creator of Node.js), Deno addresses design decisions he regretted in Node.js: Deno has first-class TypeScript support with no build step required, uses ES modules exclusively (no CommonJS), has a secure-by-default permissions model (scripts cannot access the […]

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How to Install and Secure Redis on Ubuntu: Complete Guide (2025–2026) — step-by-step tutorial on Progressive Robot

How to Install and Secure Redis on Ubuntu: Complete Guide (2025–2026)

In 2025–2026, installing and securing Redis on Ubuntu is a critical task for developers and sysadmins using Redis as a fast in-memory cache, session store, message broker, or real-time data engine. By default, Redis listens on all interfaces without authentication—leaving it vulnerable if port 6379 is exposed. This step-by-step guide shows you exactly how to install and secure Redis on Ubuntu (22.04 LTS, 24.04 LTS, and later), including binding to localhost, setting a strong password (or ACLs), renaming/disabling dangerous commands, and verifying everything works.

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How to Use SFTP to Securely Transfer Files: Complete Guide (2025–2026) — step-by-step tutorial on Progressive Robot

How to Use SFTP to Securely Transfer Files: Complete Guide (2025–2026)

In 2025–2026, securely transferring files to and from remote servers remains essential for developers, sysadmins, and DevOps teams. Legacy FTP is insecure and widely deprecated due to plain-text credentials and data. SFTP (Secure File Transfer Protocol) — built into SSH — provides encrypted, reliable file transfers and is the modern standard replacement.

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How to Install Java on Ubuntu: JRE, JDK, OpenJDK & Oracle Guide (2025) — step-by-step tutorial on Progressive Robot

How to Install Java on Ubuntu: JRE, JDK, OpenJDK & Oracle Guide (2025)

In 2025, installing Java on Ubuntu remains essential for running applications like Tomcat, Jetty, Glassfish, Cassandra, and Jenkins. The Java Virtual Machine (JVM) powers these tools, and Ubuntu’s apt makes setup straightforward for both Java Runtime Environment (JRE) and Java Development Kit (JDK). This step-by-step how to install Java on Ubuntu guide covers OpenJDK (default, open-source) and Oracle JDK installations, managing multiple versions, setting JAVA_HOME, troubleshooting, and best practices. Whether you’re a developer or sysadmin, follow these instructions for a seamless setup on Ubuntu 22.04+.

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Introduction to Git: Installation, Usage, and Branches — step-by-step tutorial on Progressive Robot

Introduction to Git: Installation, Usage, and Branches

Introduction to Git is at the heart of what we cover here at Progressive Robot. This article explains how Introduction to Git applies in practice, why it matters, and how teams can put it to work effectively. Introduction Version control systems are essential tools in modern software development. A version control system allows you to […]

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