1bcb6dd91SMike Frysinger#!/bin/sh 2bcb6dd91SMike Frysinger 3bcb6dd91SMike Frysingerusage() { 4bcb6dd91SMike Frysinger ( 5bcb6dd91SMike Frysinger echo "Usage: $0 <board IP> [board port]" 6bcb6dd91SMike Frysinger echo "" 7bcb6dd91SMike Frysinger echo "If port is not specified, '6666' will be used" 8bcb6dd91SMike Frysinger [ -z "$*" ] && exit 0 9bcb6dd91SMike Frysinger echo "" 10bcb6dd91SMike Frysinger echo "ERROR: $*" 11bcb6dd91SMike Frysinger exit 1 12bcb6dd91SMike Frysinger ) 1>&2 13bcb6dd91SMike Frysinger exit $? 14bcb6dd91SMike Frysinger} 15bcb6dd91SMike Frysinger 16bcb6dd91SMike Frysingerwhile [ -n "$1" ] ; do 17bcb6dd91SMike Frysinger case $1 in 18bcb6dd91SMike Frysinger -h|--help) usage;; 19bcb6dd91SMike Frysinger --) break;; 20bcb6dd91SMike Frysinger -*) usage "Invalid option $1";; 21bcb6dd91SMike Frysinger *) break;; 22bcb6dd91SMike Frysinger esac 23bcb6dd91SMike Frysinger shift 24bcb6dd91SMike Frysingerdone 25bcb6dd91SMike Frysinger 26bcb6dd91SMike Frysingerip=$1 27bcb6dd91SMike Frysingerport=${2:-6666} 28bcb6dd91SMike Frysinger 29bcb6dd91SMike Frysingerif [ -z "${ip}" ] || [ -n "$3" ] ; then 30bcb6dd91SMike Frysinger usage "Invalid number of arguments" 31bcb6dd91SMike Frysingerfi 32bcb6dd91SMike Frysinger 33bcb6dd91SMike Frysingerfor nc in netcat nc ; do 34*77093180SMike Frysinger type ${nc} >/dev/null 2>&1 && break 35bcb6dd91SMike Frysingerdone 36bcb6dd91SMike Frysinger 37bcb6dd91SMike Frysingertrap "stty icanon echo intr ^C" 0 2 3 5 10 13 15 38bcb6dd91SMike Frysingerecho "NOTE: the interrupt signal (normally ^C) has been remapped to ^T" 39bcb6dd91SMike Frysinger 40bcb6dd91SMike Frysingerstty -icanon -echo intr ^T 41*77093180SMike Frysinger( 42*77093180SMike Frysingerwhile ${nc} -u -l -p ${port} < /dev/null ; do 43*77093180SMike Frysinger : 44*77093180SMike Frysingerdone 45*77093180SMike Frysinger) & 46*77093180SMike Frysingerpid=$! 47*77093180SMike Frysinger${nc} -u ${ip} ${port} 48*77093180SMike Frysingerkill ${pid} 2>/dev/null 49