A Bash script is a text file containing a sequence of commands written for the Bash shell, which is the default command-line interpreter for most Unix-like operating systems. Bash scripts are commonly used to automate repetitive tasks, manage system operations, and simplify complex workflows. They can include variables, loops, conditionals, and functions, making them powerful tools for system administrators and developers. By executing a Bash script, users can perform a series of commands automatically, saving time and reducing the risk of manual errors. Bash scripts are widely used in cybersecurity for tasks such as log analysis, vulnerability scanning, and automated incident response.