Unix shell from trigger(or)SPL

Is there anyway to use triggers or SPL to shell out to Unix and run a unix shell? We would like a process to create a subprocess(background) whenever a specific SQL action occurs. Anyone one know how, or a where I can look for more information. Thanks -- Rick Tucker rickt@wybbs.mi.org razer99@aol.com -- I try to take one day at a time..., but lately several days have attacked me at once. --