In this chapter, we list all commands that are available in GRUB.
Commands belong to different groups. A few can only be used in the global section of the configuration file (or “menu”); most of them can be entered on the command-line and can be used either anywhere in the menu or specifically in the menu entries.
In rescue mode, only the insmod (see insmod), ls (see ls), set (see set), and unset (see unset) commands are normally available. If you end up in rescue mode and do not know what to do, then see GRUB only offers a rescue shell.