I guess if you are REALLY lazy these days ...
http://www-128.ibm.com/developerworks/linux/library/l-knockage.html?ca=dgr-lnxw01Knock-Knock
I wonder if you can teach it Morse code ?
--
Ben Duncan - Business Network Solutions, Inc. 336 Elton Road Jackson MS, 39212
"Never attribute to malice, that which can be adequately explained by stupidity"
- Hanlon's Razor