Find entities using the named logistic group

logi_group_finder.lua

/sc --[[ logi group finder ]]
local c = 0
local function check_for_group(e, section_container, group_name)
  for _, section in pairs(section_container.sections) do
    if section.group == group_name then
      game.player.print({"", e.localised_name, ": ", e.gps_tag})
      c = c + 1
    end
  end
end
local function find(group_name)
  for _, s in pairs(game.surfaces) do
    for _, e in pairs(s.find_entities_filtered{type={"constant-combinator", "space-platform-hub", "roboport", "character"}}) do
      if e.get_logistic_sections() then
        check_for_group(e, e.get_logistic_sections(), group_name)
      elseif e.get_control_behavior() then
        check_for_group(e, e.get_control_behavior(), group_name)
      end
    end
  end
  game.print("Found " .. c .. " entities.")
end
--[[ parameterization is on the last line because it's easiest to change on the command line ]]
find "roboport - nauvis"