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Ruby is an open-source, object-oriented programming language created by Yukihiro Matsumoto in 1995. It is designed to be simple and easy to use, yet powerful and flexible. Ruby is often used for web development, scripting, and general-purpose programming. It is known for its use of blocks, which allow for the creation of concise and powerful code. Ruby is also popular for its use of metaprogramming, which allows for the dynamic creation of code at runtime.

Heroku is a cloud-based Platform as a Service (PaaS) that simplifies the deployment, management and scaling of modern web applications. Developers push code to Heroku via Git or GitHub, and Heroku’s buildpacks automatically detect the language (such as Ruby, Node.js, Python, Java, Go or PHP), install dependencies and compile a runnable slug. Applications run in lightweight, isolated containers called dynos, which can be scaled horizontally or vertically on demand. The platform also offers a marketplace of add-ons (databases, caching, monitoring, logging, etc.), a web-based dashboard and a command-line interface, allowing teams to iterate quickly without managing underlying infrastructure.

Jekyll is an open-source, Ruby-based static site generator that transforms plain-text content (written in Markdown, Textile or HTML) and Liquid-templated layouts into a complete, static website. By using simple “front matter” at the top of each page or post to define metadata (like title, date and categories), Jekyll assembles content with shared layouts, includes and assets into fully rendered HTML files. Because it produces only static pages—no databases or server-side processing—it delivers fast, secure sites that are easy to host (notably on GitHub Pages) and maintain via version control.

Linux is an open-source operating system that is based on the Linux kernel. It is a free and powerful operating system that is used in many different types of computing devices, from smartphones to supercomputers. It is highly customizable and can be used for a variety of tasks, from web hosting to software development. It is also highly secure and reliable, making it a popular choice for many users.

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