Arduino serial ouput to file?

[conradin]

Hi all,
Yesterday I started using the Arduino. I'm happy at easy everything seems to be. What I haven't figured out yet is how to send the serial output to a file. The device is mounted at /dev/ttyACM0

void setup()                    
{
  Serial.begin(9600);              // set up Serial library at 9600 bps
  Serial.println("Hello world!");  // prints hello with ending line break 
}
void loop()                       
{
                                  // do nothing!
}

For example, how could I send that to a file on my computer?