What it is sending via stdin is not yes but cfgsave.

My suspicion is that the code that produces the debug output above is not the code that we are seeing.

Maybe janasec can post the real code to produce the above output in a new node, which also uses stdin_data somewhere.

its working now,tested it couple of times and sure now

posting the formatted code

#!/usr/bin/perl
use strict;
use warnings;
use List::Util qw( first );
use Net::OpenSSH;
use Log::Log4perl qw(:easy);
Log::Log4perl->easy_init($INFO);
$Net::OpenSSH::debug = -1;


my $logger = get_logger();



my $username = 'admin';
my $password = 'password';
my $ip       = '10.227.0.216';


$logger->info( "performing ssh to the swicth" );
my $ssh = Net::OpenSSH->new(
    $ip,
    user        => "$username",
    password    => "$password",
    master_opts => [-o => "StrictHostKeyChecking=no"] );

$logger->info( "listing zone on the switch $ip using zoneshow" );
my ( $out, $err ) = $ssh->capture2( "zoneshow" );
print "$out\n";
$logger->info( "zoneshow successful" );

$logger->info( "listing zone on the switch $ip using nsshow" );
( $out, $err ) = $ssh->capture2( "nsshow" );
print "$out\n";
$logger->info( "nsshow successful" );

sleep 3;

$logger->info( "create zone on the switch $ip using zonecreate" );
( $out, $err ) = $ssh->capture2( "zonecreate \"test15\", \" 20:01:00:1
+1:0d:34:57:00\" " );
$ssh->error and die "remote find command failed: $!" . $ssh->error;
print "$out\n";
$logger->info( "zonecreate successful" );

##now add the zone to the config and save it
( $out, $err ) = $ssh->capture2( "cfgadd \"FC_DVT\", \"test15\"" );
$ssh->error and die "remote find command failed: $!" . $ssh->error;
print "$out\n";

( $out, $err ) = $ssh->capture2( { stdin_data =>"yes\n"}, "cfgsave"  )
+;
$ssh->error and die "remote find command failed: $!" . $ssh->error;
print "$out\n";

( $out, $err ) = $ssh->capture2( { stdin_data =>"yes\n"},"cfgenable \"
+FC_DVT\"");
$ssh->error and die "remote find command failed: $!" . $ssh->error;
print "$out\n";
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thanks all,salva,soonix,corion