Navio2 Install inquiries

It entered automatically try to run the file.
However, because it takes time to complete this file to run automatically when you enter text?
Even put a gps phrase came out running this happens is this normal?
Do you know The attached screenshot.

Please list your actions step by step.

pi@navio: ~ $ sudo nohup ArduCopter-quad -A udp: -C /dev/ttyAMA0 > /home/pi/startup_log &

And then enter bunjjae been dozens of such situations.

Could you please show and tell us what happens if you launch ArduCopter without nohup and &?

As in navio2 document had auto-run type. Nevertheless phrase that continues to come only