Greetings all my fellow monks,

After running this line:

run \@cmd, \$in, \$out, \$err, timeout( 3, exception => 'timeout' );

[download]
where cmd is a little program written in C, which mainly does some printf stuff.

I found that when "\n" is added to the the printf statement as printf("hello world\n"); I can get the output ("hello world") through $out without any problem,
but without it the output is always empty. (IMHO, the ``$out'' is also line-buffered as stdout.)

So, my question is, is there any way to get all the output generated by the C program regardless of the ending newline character?

Any help is appreciated.

Update 1: Here's my code.
#!/usr/bin/perl -w

use strict;
use warnings;
use CGI qw/:standard/;
use CGI::Carp qw/fatalsToBrowser warningsToBrowser/;
use IPC::Run qw/run timeout/;

if (param('in')) {
        $in = param('in');
        print p("Input: $in\n"); 
} else {
        undef $in;
}

my @cmd = ( "/data2/tmp/a.exc" );
eval {
        local $| = 1;
        run \@cmd, \$in, \$out, \$err, timeout( 3, exception => 'timeo
+ut' );
};

print "Timed out...\n\n" if $@ =~ /timeout/;
print "ERROR: $err\n\n" if $err;
chomp($out) && print "Output: $out\n" if $out;
print "Expected output: ", param('out') if param('out');

[download]

It's slightly edited, removed the lines not related to the problem.

Update 2:

Sorry, I think it's all my fault:

chomp($out) && print "Output: $out\n" if $out;

This is where the problem lies...after removing chomp($out) &&, things back to normal again. Now I don't know what to say or explain....

A letter to NodeReaper:
The connection here was kinda weird on my attempt to send replies to this node.
I could reach the preview page at a good speed, but when I did the real submission, things became very slow, and finally I got a ``content-length: 0'' on my Opera window...
I think that's why you got many empty nodes. It's okay now.

In reply to Get output after running IPC::Run by pid

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