PortValhalla/scripts/Common/Config/GRUB/setup.sh

#!/bin/bash
EFI_BOOT_DIR="${EFI_BOOT_DIR}";
BOOTLOADER_ID="${BOOTLOADER_ID}";

# Elevate script
if [ ! "$UID" -eq 0 ]
then
    sudo \
        EFI_BOOT_DIR="${EFI_BOOT_DIR}" \
        BOOTLOADER_ID="${BOOTLOADER_ID}" \
            bash "$BASH_SOURCE";
else
    sed -i \
        -e "s/#\(GRUB_DISABLE_OS_PROBER\)/\1/" \
        -e "/^GRUB_CMDLINE_LINUX_DEFAULT=/{" \
            -e "h; s/^/#/; p;" \
            -e "g; s/loglevel=3 quiet//" \
        -e "}" \
        /etc/default/grub;

    grub-install --target=x86_64-efi --efi-directory="$EFI_BOOT_DIR" --bootloader-id="$BOOTLOADER_ID";
    grub-mkconfig -o "$EFI_BOOT_DIR/grub/grub.cfg";
fi;