# grub-editenv > Edit GRUB environment variables. > More information: . - Set a default boot entry (Assuming the boot entry already exists): `grub-editenv /boot/grub/grubenv set default={{Ubuntu}}` - Display the current value of the `timeout` variable: `grub-editenv /boot/grub/grubenv list timeout` - Reset the `saved_entry` variable to the default: `grub-editenv /boot/grub/grubenv unset saved_entry` - Append "quiet splash" to the kernel command line: `grub-editenv /boot/grub/grubenv list kernel_cmdline`