Log files are records created by computer systems, applications, or servers that document events, processes, and activities. They help track what happens within a system, including errors, user actions, and system performance. This information is crucial for troubleshooting issues, monitoring system health, and ensuring security. Typically stored in plain text format, log files can be analyzed to identify patterns or anomalies. They are often used by system administrators and developers to improve software and maintain operational efficiency. Common types of log files include system logs, application logs, and security logs.