Logs are an important aspect of Linux system administration, providing insights into system health, security, and performance.In Red Hat-based systems, two powerful logging mechanisms coexist: journalctl and classic plain-text logs in /var/log.The journalctl command allows for viewing and filtering logs, managing journal size and retention, and analyzing logs by time or priority.Classic logs in /var/log provide easy-to-work-with log files for specific purposes, such as system events, authentication logs, and web server logs.