replacement for netcat

replacement for netcat

    # now wait for ssh port
    RETRY=20
    until [[ ${RETRY} -le 0 ]]
    do
      timeout 1 bash -c "cat < /dev/null > /dev/tcp/${VM_NAME}.${VM_DOMAIN}/22" 2> /dev/null
      if [ $? -eq 0 ]
      then
        break
      else
        sleep 20s
        RETRY=$(expr ${RETRY} - 1)
      fi
    done
    if [[ ${RETRY} -le 0 ]]
    then
      printf "${red} could not connect to ssh port for '${VM_NAME}' ${endColor}\n"
      exit 1
    fi