diff --git a/nerdtree_plugin/fs_menu.vim b/nerdtree_plugin/fs_menu.vim
index e48bd81..3bb11db 100644
--- a/nerdtree_plugin/fs_menu.vim
+++ b/nerdtree_plugin/fs_menu.vim
@@ -217,11 +217,21 @@ endfunction
 " FUNCTION: NERDTreeListNode() {{{1
 function! NERDTreeListNode()
     let treenode = g:NERDTreeFileNode.GetSelected()
-    if treenode != {}
-        let metadata = split(system('ls -ld ' . shellescape(treenode.path.str())), '\n')
+    if !empty(treenode)
+        if has("osx")
+            let stat_cmd = 'stat -f "%z" '
+        else
+            let stat_cmd = 'stat -c "%s" '
+        endif
+
+        let cmd = 'size=$(' . stat_cmd . shellescape(treenode.path.str()) . ') && ' .
+        \         'size_with_commas=$(echo $size | sed -e :a -e "s/\(.*[0-9]\)\([0-9]\{3\}\)/\1,\2/;ta") && ' .
+        \         'ls -ld ' . shellescape(treenode.path.str()) . ' | sed -e "s/ $size / $size_with_commas /"'
+
+        let metadata = split(system(cmd),'\n')
         call nerdtree#echo(metadata[0])
     else
-        call nerdtree#echo("No information avaialable")
+        call nerdtree#echo("No information available")
     endif
 endfunction