I think I can see where you are headed with this, but I didn't get your example to work yet. Your idea would be especially useful on systems with firewall constraints that do not allow X Window traffic to pass from the web server to the developer's X server.

This is what I tried:
I used telnet to log onto the web server, and made a little cgi program that used your code. I set the TTY variable to be the same as the device used by my telnet window. I used chmod to open up read and write priviledges on the TTY device for the telnet window. I invoked the CGI from my web browser and I saw the prompt for the debugger come up in my telnet window. But when I typed a debugger command, the command went to the shell instead of going to the debugger. So the debugger commands weren't executed, and the CGI program hung.

Suggestions?

It should work perfectly the first time! - toma