I'm trying to write to a program and read it's output into a scalar. I have the writing part down fine but I don't know how to read the output. I can't use IPC::Open2 or IPC::Open3 either.

How do I capture this programs output into a scalar? 
#!/usr/bin/perl -w

use strict;

my ( $form, $clone_from, $clone_to ) = @ARGV;

#  Trying to use this to capture output
open( STDOUT, "|-" ) or die ("Can't open standard output: $!\n");

open( my $writeme, "| program -text -brief clone_error")
      or die ("Can't run write program: $!\n");

print $writeme <<EOF;
$form
r
clone_from=$clone_from
r
EOF

#  Program works fine for write, and at this point a bunch of text is 
+printed from the program
#  to the screen.  But I want to capture the output to a variable.

#  This was my try but it doesn't work
my $output;
while ( <STDOUT> ) {

     $output .= $_;

}

print "stored " . $output . " stored";

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In reply to Reading programs output into a Scalar - How? by awohld

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