1#!/bin/sh 2 3usage() { 4 ( 5 echo "Usage: $0 <board IP> [board port]" 6 echo "" 7 echo "If port is not specified, '6666' will be used" 8 [ -z "$*" ] && exit 0 9 echo "" 10 echo "ERROR: $*" 11 exit 1 12 ) 1>&2 13 exit $? 14} 15 16while [ -n "$1" ] ; do 17 case $1 in 18 -h|--help) usage;; 19 --) break;; 20 -*) usage "Invalid option $1";; 21 *) break;; 22 esac 23 shift 24done 25 26ip=$1 27port=${2:-6666} 28 29if [ -z "${ip}" ] || [ -n "$3" ] ; then 30 usage "Invalid number of arguments" 31fi 32 33for nc in netcat nc ; do 34 type ${nc} >/dev/null 2>&1 && break 35done 36 37trap "stty icanon echo intr ^C" 0 2 3 5 10 13 15 38echo "NOTE: the interrupt signal (normally ^C) has been remapped to ^T" 39 40stty -icanon -echo intr ^T 41( 42if type ncb 2>/dev/null ; then 43 # see if ncb is in $PATH 44 exec ncb ${port} 45 46elif [ -x ${0%/*}/ncb ] ; then 47 # maybe it's in the same dir as the netconsole script 48 exec ${0%/*}/ncb ${port} 49 50else 51 # blah, just use regular netcat 52 while ${nc} -u -l -p ${port} < /dev/null ; do 53 : 54 done 55fi 56) & 57pid=$! 58${nc} -u ${ip} ${port} 59kill ${pid} 2>/dev/null 60