#!/bin/sh
  
  usage() {
  	(
  	echo "Usage: $0 [board IP] [board port]"
  	echo ""
  	echo "If IP is not specified, 'localhost' will be used"
  	echo "If port is not specified, '2001' will be used"
  	[ -z "$*" ] && exit 0
  	echo ""
  	echo "ERROR: $*"
  	exit 1
  	) 1>&2
  	exit $?
  }
  
  while [ -n "$1" ] ; do
  	case $1 in
  		-h|--help) usage;;
  		--)        break;;
  		-*)        usage "Invalid option $1";;
  		*)         break;;
  	esac
  	shift
  done
  
  ip=${1:-localhost}
  port=${2:-2001}
  
  if [ -z "${ip}" ] || [ -n "$3" ] ; then
  	usage "Invalid number of arguments"
  fi
  
  trap "stty icanon echo opost intr ^C" 0 2 3 5 10 13 15
  echo "NOTE: the interrupt signal (normally ^C) has been remapped to ^T"
  
  stty -icanon -echo -opost intr ^T
  nc ${ip} ${port}
  exit 0