I want to write a small utility that runs programs with poor user
interface (like sh,csh,bc,etc.).
This utility will communicate those programs by a pseudo tty (pty).
I was able to open a pty for the sub-process (I use tcsh for this test)
and the control part for the parent. Everything seems to work fine
1. I could not implement non blocking terminal IO
(real terminal read AND the pty read), together with non busy
waiting, to avoid 100% cpu I used sleep!!! Is there a better way?
(there must be)
2. My tcsh process was shouting something about no access to terminal
("not a tty" or something), but all keys operated correctly
When I run emacs (not the X version), it was using only 25 rows
instead of 43.
I guess that I have to do some setting up to my pty control side
but I could not find anything about that in my ioctl man pages.
PS I am using Linux-1.1.13 - my manual pages are much older than the
kernel (about 1-2 years older), so I can't rely on them.
Please respond by mail, I never read this news-group.