blob: 6ef2723f5848a0b7f973067271d9c5bf1150a18a (
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|
#!/bin/sh
usage() {
(
echo "Usage: $0 <board IP> [board port]"
echo ""
echo "If port is not specified, '6666' will be used"
[ -z "$*" ] && 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=$1
port=${2:-6666}
if [ -z "${ip}" ] || [ -n "$3" ] ; then
usage "Invalid number of arguments"
fi
for nc in netcat nc ; do
type ${nc} >/dev/null 2>&1 && break
done
trap "stty icanon echo intr ^C" 0 2 3 5 10 13 15
echo "NOTE: the interrupt signal (normally ^C) has been remapped to ^T"
stty -icanon -echo intr ^T
(
while ${nc} -u -l -p ${port} < /dev/null ; do
:
done
) &
pid=$!
${nc} -u ${ip} ${port}
kill ${pid} 2>/dev/null
|
