How to interface arduino Uno with Matlab in Ubuntu14.04

Hello, I am having problem while interfacing Arduino with Matlab in Ubuntu. when i enter arduino in command window it is showing Note: a DEMO connection will be created Use a the com port, e.g. 'COM5' as input argument to connect to the real board Demo mode connection ....... Motor Shield V2 (plus adioes.pde functions) sketch detected ! Arduino successfully connected !

ans =

arduino object connected to DEMO port Motor Shield sketch V2 (plus adioes.pde functions) running on the board

Servo 2 is DETACHED Servo 3 is DETACHED Servo 4 is DETACHED Servo 5 is DETACHED Servo 6 is DETACHED Servo 7 is DETACHED Servo 8 is DETACHED Servo 9 is DETACHED Servo 10 is DETACHED Servo 11 is DETACHED Servo 12 is DETACHED Servo 13 is DETACHED Servo 14 is DETACHED Servo 15 is DETACHED Servo 16 is DETACHED Servo 17 is DETACHED Servo 18 is DETACHED Servo 19 is DETACHED Servo 20 is DETACHED Servo 21 is DETACHED Servo 22 is DETACHED Servo 23 is DETACHED Servo 24 is DETACHED Servo 25 is DETACHED Servo 26 is DETACHED Servo 27 is DETACHED Servo 28 is DETACHED Servo 29 is DETACHED Servo 30 is DETACHED Servo 31 is DETACHED Servo 32 is DETACHED Servo 33 is DETACHED Servo 34 is DETACHED Servo 35 is DETACHED Servo 36 is DETACHED Servo 37 is DETACHED Servo 38 is DETACHED Servo 39 is DETACHED Servo 40 is DETACHED Servo 41 is DETACHED Servo 42 is DETACHED Servo 43 is DETACHED Servo 44 is DETACHED Servo 45 is DETACHED Servo 46 is DETACHED Servo 47 is DETACHED Servo 48 is DETACHED Servo 49 is DETACHED Servo 50 is DETACHED Servo 51 is DETACHED Servo 52 is DETACHED Servo 53 is DETACHED Servo 54 is DETACHED Servo 55 is DETACHED Servo 56 is DETACHED Servo 57 is DETACHED Servo 58 is DETACHED Servo 59 is DETACHED Servo 60 is DETACHED Servo 61 is DETACHED Servo 62 is DETACHED Servo 63 is DETACHED Servo 64 is DETACHED Servo 65 is DETACHED Servo 66 is DETACHED Servo 67 is DETACHED Servo 68 is DETACHED Servo 69 is DETACHED

Servo Methods: servoStatus servoAttach servoDetach servoRead servoWrite

Encoder 0 is DETACHED Encoder 1 is DETACHED Encoder 2 is DETACHED

Encoder Methods: encoderStatus encoderAttach encoderDetach encoderRead encoderReset

The speed of motor number 1 is set to: 0 over 255 The speed of motor number 2 is set to: 0 over 255 The speed of motor number 3 is set to: 0 over 255 The speed of motor number 4 is set to: 0 over 255 The speed of stepper number 1 is set to: 0 over 255 The speed of stepper number 2 is set to: 0 over 255

DC Motor and Steppers Methods: motorSpeed motorRun stepperSpeed stepperStep

Serial port and other Methods: serial flush roundTrip

and when i enter othe command

a.arduino('/dev/ttyACM1') Undefined variable "a" or class "a.arduino".

somebody help me to solve it. is there any user manual to follow?