console.sh

#!/bin/bash

port="44400"
host="localhost"
rcon_passwd="<your_password>"

[ -n "$1" ] && port=$1
[ -n "$2" ] && host=$1 && port=$2

send() {
    echo -e "\xFF\xFF\xFF\xFFrcon ${rcon_passwd} $*\n\n" | nc -uq 1 ${host} ${port}
}

check_connection() {
    response=`send status`
    [ "${response}" = "" ] && return 1 || return 0
}

echo -n "$0: connecting... "
if ! check_connection; then
    echo -e "\n$0: can't connect to ${host}:${port}"
    echo -e "usage: $0 [[<host>] <port>]"
    exit 0
fi
echo -e "[ok]\n$0: press ^C or type \"quit\" to exit\n"

while true; do
    IFS="" read -r -e -d $'\n' -p "> " cmd
    [ "${cmd}" == "quit" ] && exit 0
    send ${cmd} | tail -n+3
    history -s "${cmd}"
done