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Linux, Cloud & DevOps Tutorials

Practical, hands-on guides covering Linux, cloud infrastructure, Docker, Kubernetes, Python, cybersecurity, AI, and more — written for engineers at every level.

published tutorials: 24,529
topic categories: 21
languages available: 8

Tutorials Linux Windows Server Javascript FreeBSD IBM AIX Oracle Linux Red Hat Enterprise Linux SUSE Linux Enterprise Programming

Showing 1–12 of 24 tutorials

ProgrammingMay 12, 20264 min read

How To Install And Get Started With Sinatra On Your System Or VPS

Sinatra is a simple and lightweight web framework written in Ruby. This article assumes you know basic Ruby and have...

ProgrammingMay 12, 20266 min read

How To Write Your First Ruby Program

The “Hello, World!” program is a classic and time-honored tradition in computer programming. It's a simple and complete first program...

ProgrammingMay 12, 20269 min read

How To Install Ruby and Set Up a Local Programming Environment on macOS

In this tutorial, you'll set up a Ruby programming environment on your local macOS machine using Homebrew—a free and open-source...

ProgrammingMay 12, 202613 min read

Understanding Data Types in Ruby

In this tutorial, you'll learn about the most important data types native to Ruby: integers, floats, strings, symbols, arrays, and...

ProgrammingMay 12, 202611 min read

How To Install Ruby and Set Up a Local Programming Environment on Windows 10

This tutorial will go over how to set up a Ruby programming environment on your local Windows 10 machine using...

ProgrammingMay 12, 20269 min read

How To Install Ruby on Rails with rbenv on macOS

In this tutorial, you will use rbenv to install and set up Ruby on Rails on your local macOS machine....

ProgrammingMay 12, 202611 min read

How To Package And Distribute Ruby Applications As a Gem Using RubyGems

In this tutorial, we will begin with understanding RubyGems, the Gem package format, and then learn how to package a...

ProgrammingMay 12, 202625 min read

How To Set Up User Authentication with Devise in a Rails 7 Application

The Devise gem is an authentication solution for Rails applications. The Devise gem provides many useful features for implementing user...

ProgrammingMay 12, 20267 min read

How To Set Up Zero Downtime Rails Deploys Using Puma and Foreman

This guide demonstrates how to set up zero downtime Rails deploys using Puma and Foreman.

ProgrammingMay 12, 20267 min read

How To Understand the Chef Configuration Environment on a VPS

Chef is a popular configuration management system that allows you to deploy predictable, complex environments to machines within your organization....

ProgrammingMay 12, 202621 min read

How To Use ActiveStorage in Rails 6 with object storage

Save images to object storage with Rails 6 and Active Storage

ProgrammingMay 12, 20268 min read

How to Use and Understand Action Objects and the cloud provider API

In version two of the cloud provider API, each event that occurs creates [an "Action" object](https://www.progressiverobot.com/). These serve both as...