centos man page for grub-mkconfig

GRUB-MKCONFIG(8)                                          System Administration Utilities                                         GRUB-MKCONFIG(8)

NAME
       grub-mkconfig - generate a GRUB configuration file

SYNOPSIS
       grub-mkconfig [OPTION]

DESCRIPTION
       Generate a grub config file

       -o, --output=FILE
              output generated config to FILE [default=stdout]

       -h, --help
              print this message and exit

       -v, --version
              print the version information and exit

REPORTING BUGS
       Report bugs to <bug-grub@gnu.org>.

SEE ALSO
       grub-install(8)

       The  full documentation for grub-mkconfig is maintained as a Texinfo manual.  If the info and grub-mkconfig programs are properly installed
       at your site, the command

              info grub-mkconfig

       should give you access to the complete manual.

grub-mkconfig (GRUB) 2.02-2ubuntu8.3                                 July 2018                                                    GRUB-MKCONFIG(8)