private:

std::vector<std::string> args_{};

std::unordered_map<std::string, std::string> env_{};

public:

explicit subprocess(std::initializer_list<std::string> args);

explicit subprocess(std::initializer_list<std::string> args, subprocess_env_map_t env);

explicit subprocess(std::vector<std::string> args);

explicit subprocess(std::vector<std::string> args, subprocess_env_map_t env);

subprocess_result run() const;

std::string check_output() const;