Script to start can bus interface on a Beagle Bone Black

canbus_start.sh

#!/bin/bash

re='^[0-9]+$'
if ! [[ $1 =~ $re ]] ; then
   echo -e "ERROR: Can bus bitrate not a number or a value wasn't entered.\n\nPlease enter a speed in Kbit/s\n\n Example: canbus_start.sh 100\n Speeds: 100,125,250,500\n" >&2; exit 1
fi

echo Bitrate: ${1}Kbit/s
sudo modprobe can
sudo modprobe can-dev
sudo modprobe can-raw

sudo ip link set can0 up type can bitrate ${1}000
sudo ifconfig can0 up