How to do quickly in order to starting fiasco with a console shell? After copying  src/l4/conf/examples/x86-fb.list to src/l4/conf/modules.list,I use QEMU to boot,the boot process appears to be normal:
    .......
    fbdrv   | Starting server loop
    mag     | mapped frame buffer at 0x200000
    mag     | View::Info:
    mag     |   flags: 0
    mag     |   size:  1280x1024  pos: 0, 0
    mag     |   bytes_per_line: 2560
    mag     |   buffer_offset:  0
    mag     |   RGBA(2): 5(11):6(5):5(0):0(0)
    mag     |   memory 200000-600000
    mag     | Plugin: Mag_client service started
    mag     | Plugin: Frame-buffer service started
    mag     | L4INPUT native mode activated
    mag     | L4INPUT:                !!! W A R N I N G !!!
    mag     | L4INPUT:  Please, do not use Fiasco's "-esc" with L4INPUT.
    mag     | L4INPUT:                !!! W A R N I N G !!!
    mag     | serio: i8042 AUX port at 0x60,0x64 irq 12
    mag     | serio: i8042 KBD port at 0x60,0x64 irq 1
    mag     | input: ImExPS/2 Generic Explorer Mouse on isa0060/serio1
    mag     | input: AT Translated Set 2 keyboard on isa0060/serio0
    mag     | connect "ImExPS/2 Generic Explorer Mouse", isa0060/serio1/input0
    mag     | connect "AT Translated Set 2 keyboard", isa0060/serio0/input0
    spectrum| x:640 y:480 bit/pixel:16 bytes/line:1280
   
But How can I input some shell command?

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