Which file inside the CUPS configuration directory contains the definition of the printers?

`cups-devices.conf` is not a standard CUPS configuration file for printer definitions.

`snmp.conf` is typically for SNMP daemon configuration, not CUPS printer definitions.

`printcap.conf` is an older printer capability database format used by traditional BSD-style printing systems, not by CUPS for its internal printer definitions.

The `printers.conf` file is the primary configuration file within the CUPS directory (`/etc/cups`) that holds the definitions and settings for all local and network printers managed by the CUPS server. It stores information such as printer names, device URIs, PPD files, and various options.

`cupsd.conf` is the main CUPS daemon configuration file, controlling server-wide settings like listening ports, access control, and logging, but it does not define individual printers.