SVR3.0 vs BSD4.3

[Dave Curry]

In article <7581 at brl-smoke.ARPA> gwyn at brl.arpa (Doug Gwyn (VLD/VMB) <gwyn>) writes:
>In article <12690 at brl-adm.ARPA> rbj at icst-cmr.arpa (Root Boy Jim) writes:
>>   From: Doug Gwyn  <gwyn at brl-smoke.arpa>
>>   >   "script" for recording terminal session
>>   "Script" screws up the application running under it sometimes.  It
>>   could be implemented almost trivially with STREAMS.  Somebody should
>>   do so.
>>Interesting. Please elaborate.
>
>Elaborate on what?  The screw-up is that certain operations do not
>work right on ptys.

Elaborate on that, please.  *Which* operations?  I don't claim there aren't
any, but I haven't seen anything screw up in "script" in a long, long time.

>The only thing not working was signal propagation to the
>correct process group, because the Bourne shell doesn't have a way
>to manipulate that.  A translation to C would also be only a few
>lines and could solve the signal problem.

That's a pretty big "only".  It is nice to know that you can do it in a few
lines, though.  Simplification is always good.  Note however that "script"
is hardly as short as it could be; I have written a clone of it in about
100 lines of code including variable declarations.

--Dave Curry
Purdue University
Engineering Computer Network