export DIB_BOOTLOADER_DEFAULT_CMDLINE=${DIB_BOOTLOADER_DEFAULT_CMDLINE:-"nofb nomodeset gfxpayload=text"} export DIB_BOOTLOADER_SERIAL_CONSOLE=${DIB_BOOTLOADER_SERIAL_CONSOLE:-""} if [ ! -v DIB_BOOTLOADER_VIRTUAL_TERMINAL ]; then # DIB_BOOTLOADER_VIRTUAL_TERMINAL is unset export DIB_BOOTLOADER_VIRTUAL_TERMINAL=tty0 else # DIB_BOOTLOADER_VIRTUAL_TERMINAL is set to empty string or other value export DIB_BOOTLOADER_VIRTUAL_TERMINAL=${DIB_BOOTLOADER_VIRTUAL_TERMINAL} fi