A batch file (.bat) is a text file containing a sequence of commands for a computer operating system, typically Microsoft Windows. When executed, the batch file runs each command in order, automating repetitive or complex tasks such as file management, program execution, or system configuration. Batch files are often used by system administrators and users to streamline workflows, schedule maintenance, or deploy software. However, they can also pose security risks if used to execute malicious commands, making it important to only run trusted batch files and implement proper security controls.