#!/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