#!/usr/bin/perl

# sample script to illustrate the -pty-fd option

use IO::Pty;
use Fcntl;

my $pty = new IO::Pty;
fcntl $pty, F_SETFD, 0; # clear close-on-exec

system "rxvt -pty-fd " . (fileno $pty) . "&";
close $pty;

# now communicate with rxvt
my $slave = $pty->slave;

print $slave "hi! please enter something and press return (ctrl-d to exit):\n";

while (<$slave>) {
   print $slave "you entered: $_";
}