# File lib/chef/provider/group/groupmod.rb, line 106
        def set_options(overwrite_gid=false)
          opts = ""
          if overwrite_gid || @new_resource.gid && (@current_resource.gid != @new_resource.gid)
            opts << " -g '#{@new_resource.gid}'"
          end
          if overwrite_gid
            opts << " -o"
          end
          opts << " #{@new_resource.group_name}"
          opts
        end