What can Ruby language be used for?

The Ruby language can be used for a variety of purposes, including but not limited to the following areas:

1. Web development: Ruby on Rails is a popular web development framework for Ruby, used to create efficient and scalable web applications.
2. Data analysis and scientific computing: Ruby offers various libraries and tools for handling and analyzing large amounts of data, performing scientific calculations, and tasks like machine learning.
3. System administration and automation: Ruby offers powerful tools and libraries that can be used for system management, automation tasks, and scripting, making it easy to manage and operate system resources.
4. Game Development: Ruby offers some game development frameworks and libraries that can be used to develop 2D and simple 3D games.
5. Embedded development: Ruby can be used for developing embedded devices such as Internet of Things devices, robots, and embedded systems.
6. Ruby has some GUI libraries available for desktop application development that can be used across different platforms.
7. Network programming: Ruby provides a variety of libraries and tools for network programming, which can be used to develop network applications and services.

In general, Ruby is a powerful, flexible, and user-friendly language that can be used for a variety of programming tasks.