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#!/bin/bash
#
# Script to send convert HEX string into binary and send it to specified local port
#
# Example usage:
#
# hex.sh 5039 3e52505631393535352b343533383431382d303733393531383530303032303231323b49443d393939393b2a37423c0d0a
#
if [ $# -lt 2 ]
then
echo "USAGE: $0 <host> <port> <hex>"
echo "If only <port> and <hex> are present, <host> defaults to localhost."
exit 1
fi
host="$1"; port="$2"; hex="$3";
if [ $# -eq 2 ]
then
host="localhost"; port="$1"; hex="$2";
fi
send_hex_udp () {
echo "$hex" | xxd -r -p | nc -u -w 0 "$host" "$port"
}
send_hex_tcp () {
echo "$hex" | xxd -r -p | nc "$host" "$port"
}
send_text_udp () {
echo -n -e "$hex" | nc -u -w 0 "$host" "$port"
}
send_text_tcp () {
echo -n -e "$hex" | nc "$host" "$port"
}
send_hex_tcp "$host" "$port" "$hex"
exit $?
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