diff --git a/perl-xCAT/xCAT/Utils.pm b/perl-xCAT/xCAT/Utils.pm
index 524d97cbd..960920fe6 100644
--- a/perl-xCAT/xCAT/Utils.pm
+++ b/perl-xCAT/xCAT/Utils.pm
@@ -1070,16 +1070,18 @@ sub runcmd
       my $errout;
       open (PIPE, "$cmd |");
       while (<PIPE>) {
+        push @$outref, $_;
+        chomp;      # get rid of the newline, because the client will add one
         if ($::CALLBACK){
            $rsp->{data}->[0] = $_;
            $::CALLBACK->($rsp);
         } else {
           xCAT::MsgUtils->message("D", "$_");
         }
-        $output .= $_;
+        #$output .= $_;
       }
       # store the return string
-      push  @$outref,$output;   
+      #push  @$outref,$output;   
     }
 
     # now if not streaming process errors 
diff --git a/xCAT-client/bin/genimage b/xCAT-client/bin/genimage
index f3b6abed5..b474f906f 100755
--- a/xCAT-client/bin/genimage
+++ b/xCAT-client/bin/genimage
@@ -210,7 +210,7 @@ if ((!$imagename) && (!$os)){
     
     chomp($os);
 }
-print "  OS: $os\n";
+if ($os) { print "  OS: $os\n"; }
 
 
 
@@ -280,7 +280,7 @@ if ((!$imagename) && (!$profile)){
 	}
     }
 }
-print  "  Profile: $profile\n";
+if ($profile) { print  "  Profile: $profile\n"; }
 
 # get the interface
 if ((!$imagename) && (!$interface)){
@@ -309,7 +309,7 @@ if ((!$imagename) && (!$interface)){
 	}
     }
 }
-print "  Interface: $interface\n";
+if ($interface) { print "  Interface: $interface\n"; }