Re: openpty() function

Thank you for your quick reply.
I gonna try your piece of code :)

Lew Pitcher a écrit :

PaowZ wrote:
Hello there,

I'm trying to program a little app where I need to input data into a
first terminal (the one I launch the process) and to ouput data into
another terminal. So I need to open a terminal during execution.
Aftersome searches, I got interested in openpty() function.
I read some examples and man-pages but something is not very clear in
my mind.
Does this function allow opening new terminal or what ?
Do I expect the right aim of this function ?

Nope. openpty(3) has nothing to do with launching an xterm window.

In simple terms, openpty(3) opens a pair of pipes that look like serial
devices. This sort of thing is commonly used so that one program can
feed data to a second program that expects to get it's data from
/dev/tty.

You probably want to use popen(3) and family, sort of like

FILE *lister;

if ((lister = popen("/usr/X11R6/bin/xterm -e more /dev/tty","w")) ==
NULL)
error("Error -cant pipe to new xterm");
else
{
fprintf(lister,"This is a test\n");
pclose(lister);
}



'Cause when I run my prog, nothing happens, so I wonder :S
Here the lines:
int master, slave;
if (openpty ( &master, &slave, NULL, NULL, NULL) < 0)
error("Error !!!");

Thanks a lot :)

.

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