What command is used to display the boot loader configuration for the GRUB system?

The command used to display the boot loader configuration for the GRUB system is grub2-mkconfig. This command generates a configuration file for the GRUB bootloader based on scripts and settings found in the system's configuration files. It reads the current system’s hardware setup, the available operating systems and kernels, and then creates a bootloader configuration suitable for booting the system.

This command is essential for ensuring that the GRUB menu displays the correct options for users to select from during system startup. It is particularly important when new kernels are installed or configurations change, as running grub2-mkconfig updates the configuration file so that it reflects these changes.

The other options do not relate to standard commands for configuring GRUB. While they might seem plausible at a glance, they lack the functionality or recognition associated with GRUB configuration and management tasks within Linux systems. Thus, understanding the role of grub2-mkconfig is critical for effectively managing bootloader settings in a Linux environment.