gistfile1.sh

check_port () 
{ 
    netstat -tpln 2> /dev/null | sed -E '/^[^t]/ d; s/^([^ ]+ +){3}//; s/ .*$//; s/^.*://;' | grep --color "^$1$" > /dev/null
}
wait_port () 
{ 
    typeset t;
    t=$2;
    while (( $t > 0 )) && ! check_port $1; do
        echo "waiting for port $1 for $t secconds.";
        sleep 1s;
        (( t-- ));
    done;
    check_port $1 && echo "Port $1 started." || { 
        echo "Port $1 was not started";
        false
    }
}