In 4.1BSD, you couldn't send an ioctl() unless the terminal were open
for writing (reading didn't matter). If the same holds for USG, then
the little break program is broken. If not, there is a UNIX incompatibility
(one among many).
--
--steve kramer
{allegra,genrad,ihnp4,utzoo,philabs,uw-beaver}!linus!axiom!smk (UUCP)
linus!axiom!smk at mitre-bedford (MIL)