Where should you check for printer errors in a Linux system?

In a Linux system, printer errors are specifically logged in the CUPS (Common Unix Printing System) error log, located at /var/log/cups/error_log. This file is dedicated to logging errors and warnings related to CUPS, making it the most appropriate choice for diagnosing printing issues.

The CUPS error log provides detailed information about problems with printer operations, including misconfigurations, connection issues, or failures in job processing. By checking this log, a user or system administrator can quickly identify what went wrong during a printing job, which is crucial for effective troubleshooting.

While other logs like /var/log/syslog and /var/log/messages may contain general system messages or logs from various services, they are not specifically focused on printing issues. The /var/log/cups/access_log records information about print job requests and access attempts but does not provide error details. Hence, for investigating printer-specific errors, referring to the CUPS error log is the best practice.