cause shell scripts to be executed incorrectly. shells would
receive an *empty* arg for name of script, open it, the kernel
would say "oh, that's ." or something similar, and the results
would be interesting... found, diagnosed, and killed by me.
new one based on one by Wolfgang Solfrank, but majorly hacked
(as it: it didn't have a chance in hell of working, before; didn't
even bother copying out argc, for one...)