Overview
This lecture introduces computer logs, their purpose, what information they record, and the basics of working with logs for troubleshooting on Windows and Linux systems.
What is a Log?
- A log is a record of events that happen on a computer system.
- Logs capture events like system startup, shutdown, driver loads, and user logins.
- Each log entry includes details such as the exact time of the event and the user responsible.
Logging Process
- The process of making log entries is called logging.
- Operating systems have background services that automatically write event details to logs.
- Log services are customizable but usually record essential fields by default.
Importance & Usage of Logs
- Logs provide data critical for troubleshooting technical issues.
- Reviewing logs can reveal errors, system changes, and user actions.
- IT support professionals rely heavily on logs to diagnose and resolve problems.
- Logs are considered a trustworthy source of system information.
Upcoming Learning Objectives
- Identify where key logs are stored on Windows and Linux operating systems.
- Learn how to read log files and recognize important details within logs.
- Practice common troubleshooting methods using log data.
Key Terms & Definitions
- Log — a file or record containing a list of system events.
- Logging — the act of recording event information to a log file.
- Event — any significant action or occurrence on a system that can be logged.
Action Items / Next Steps
- Review sample log snippets in upcoming lessons.
- Learn the locations of essential logs on Windows and Linux.
- Practice reading log files for troubleshooting purposes.