Grub menuentry picker

.zshrc

# grub menuentry picker
function grub-entry () {
    # Search for grub.cfg
    GRUB_CFG=$(find /boot -name grub.cfg 2> /dev/null)
    CUSTOM_CFG=$(find /boot -name custom.cfg 2> /dev/null)
    LIVEISO_CFG=$(find /boot -name liveiso.cfg 2> /dev/null)

    if [[ -z ${GRUB_CFG} ]]; then
      echo "No grub.cfg found under /boot. Try as root."
      exit 1
    elif [[ ! -r ${GRUB_CFG} ]]; then
      echo "${GRUB_CFG} is not readable. Try as root."
      exit 1
    fi

    GRUB_MENUENTRY=$(awk -F\' '/^#/ {next} /menuentry / {print $2}' ${GRUB_CFG} ${CUSTOM_CFG} ${LIVEISO_CFG} | xargs -L1 | sort | fzf --reverse)

    # Set boot target for next boot
    #grub-reboot "${GRUB_MENUENTRY}"
    sudo grub-set-default "${GRUB_MENUENTRY}"

    echo "Do you wish to reboot now?"
    select yn in "Yes" "No"
    case $yn in
        Yes ) reboot;;
        No ) exit;;
    esac
}