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From: shawn@jdyx.UUCP (Shawn Hayes)
Newsgroups: comp.unix.wizards,comp.unix.aix
Subject: TTY without echos
Message-ID: <1990Mar25.170947.2415@jdyx.UUCP>
Date: 25 Mar 90 17:09:47 GMT
Distribution: usa
Organization: JDyx Enterprises (Atlanta GA)
Lines: 14


     I'm trying to set up a program to read and write characters to a tty
port.  What I would like to have happen is I read a character from the port
and if it's a numeric character I echo it back, and if it is anything else
I ignore it.  Currently I can type in alphabetic characters and they are ignored
, but as soon as I echo a numeric character back to the terminal the port
echoes every character. 

   I've set up the port with a  stty -echo -echoe -echok raw
but something must still be wrong in the setup.  Is there a way to configure
a tty port to never echo characters, so that only the output from my program
shows up on the port?

                                                         Shawn Hayes