diff --git a/util/lib/puppet/parser/functions/groupmembers.rb b/util/lib/puppet/parser/functions/groupmembers.rb
new file mode 100644
index 0000000..2724467
--- /dev/null
+++ b/util/lib/puppet/parser/functions/groupmembers.rb
@@ -0,0 +1,9 @@
+
+require 'etc'
+
+module Puppet::Parser::Functions
+    newfunction(:groupmembers, :type => :rvalue) do |args|
+        Etc.getgrnam(args[0])['mem']       
+    end
+end
+