grub-setpassword — Generate the user.cfg file containing the hashed grub bootloader password.
grub-setpassword [OPTION]
grub-setpassword outputs the user.cfg file which contains the hashed GRUB bootloader password. This utility only supports configurations where there is a single root user.
The file has the format: GRUB2_PASSWORD=<hashed password>.
-h, --help
Display program usage and exit.
-v, --version
Display the current version.
-o, --output[=DIRECTORY PATH]
Choose the file path to which user.cfg will be written.
info grub
info grub2-mkpasswd-pbkdf2