Lyndon Nerenberg (VE7TFX/VE6BBM): Oh come on Rob, you should know that for anyone over the age of 50, the moment you see 'dd' your brain automatically switches to JCL mode. === Rob doubtless got IBM out of his system back in the late 1970s, when I think he was one of the authors of a shell that brought the TSO experience to Unix. Norman Wilson Toronto ON