Ruby File I/O: Reading, Writing, and Managing File Paths

Many useful Ruby applications require interacting with the filesystem to store or retrieve information. Understanding file I/O is a critical foundational skill for any serious Ruby developer. By the end of this course, you will have a strong command of the core Ruby methods for handling files, ensuring your programs can reliably access and manipulate data stored on disk. What you'll learn: * Understand the core concepts of file streams, modes (read, write, append), and encoding in Ruby. * Practice reading file content line by line and efficiently writing data to new and existing files. * Master robust error handling techniques necessary for safe filesystem operations. * Apply the Pathname class for declarative and platform-independent path manipulation and directory navigation. * Configure programs to safely handle temporary files and process common structured data formats like JSON. This course begins with essential terminology and fundamental file access methods before moving into practical exercises covering sequential reading, writing, and advanced techniques for managing file paths and directories. This course is designed for absolute beginners in Ruby who are ready to incorporate filesystem operations into their code. No prior knowledge of file I/O or advanced programming concepts is required. Start building more powerful Ruby scripts that interact seamlessly with the operating system today.