RedMew/server_api.lua

function bot_command_players(filename)
    game.write_file(filename, string.format("Online players (%d):",#game.connected_players), false,0)
    local online_players = #game.connected_players
    for _,p in pairs(online_players) do
      game.write_file(filename, p.name, true,0)
    end
end