#!/bin/sh
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usage() {
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(
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echo "Usage: $0 <board-IP> [board-port [board-in-port]]"
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echo ""
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echo "If port is not specified, '6666' will be used"
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[ -z "$*" ] && exit 0
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echo ""
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echo "ERROR: $*"
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exit 1
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) 1>&2
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exit $?
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}
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while [ -n "$1" ] ; do
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case $1 in
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-h|--help) usage;;
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--) break;;
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-*) usage "Invalid option $1";;
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*) break;;
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esac
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shift
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done
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ip=$1
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board_out_port=${2:-6666}
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board_in_port=${3:-${board_out_port}}
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echo Board out port: ${board_out_port}
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echo Board in port: ${board_in_port}
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if [ -z "${ip}" ] || [ -n "$4" ] ; then
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usage "Invalid number of arguments"
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fi
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for nc in netcat nc ; do
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type ${nc} >/dev/null 2>&1 && break
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done
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trap "stty icanon echo intr ^C" 0 2 3 5 10 13 15
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echo "NOTE: the interrupt signal (normally ^C) has been remapped to ^T"
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stty -icanon -echo intr ^T
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(
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if type ncb 2>/dev/null ; then
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# see if ncb is in $PATH
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exec ncb ${board_out_port}
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elif [ -x ${0%/*}/ncb ] ; then
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# maybe it's in the same dir as the netconsole script
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exec ${0%/*}/ncb ${board_out_port}
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else
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# blah, just use regular netcat
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while ${nc} -u -l -p ${board_out_port} < /dev/null ; do
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:
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done
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fi
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) &
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pid=$!
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${nc} -u ${ip} ${board_in_port}
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kill ${pid} 2>/dev/null
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