na samym poczatku pliku otserv.cpp
#include <boost/filesystem.hpp>
#include <boost/range.hpp>

nad

//load spells data
    std::cout << ":: Loading spells.xml...            ";
    if(!spells.loadFromXml(g_config.DATA_DIR))
    {
        ErrorMessage("Unable to load spells.xml!");
        return -1;
    }
    std::cout << "[done]" << std::endl;

dodaj

boost::filesystem::path latest;
    std::time_t latest_tm{};

    for (auto&& entry : boost::make_iterator_range(boost::filesystem::directory_iterator("./saves/"), {})) {
        boost::filesystem::path p = entry.path();
        if (is_regular_file(p) && p.extension() == ".sql") {
            std::time_t timestamp = boost::filesystem::last_write_time(p);
            if (timestamp > latest_tm) {
                latest = p;
                latest_tm = timestamp;
            }
        }
    }

    if (latest.empty())
        std::cout << "Nothing found\n";
    else
        std::cout << "Last modified: " << latest << "\n";