Bash scripting is a way to automate tasks in a computer's operating system using the Bash shell, which is a command-line interface. It allows users to write scripts, or small programs, that can execute a series of commands automatically. This is useful for repetitive tasks, such as file management, system monitoring, and software installation. Scripts are written in plain text and can include variables, loops, and conditional statements, making them powerful tools for both beginners and advanced users. By using Bash scripting, users can save time and reduce errors in their daily computing tasks.