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#include <unistd.h> #include <fstream> #include <ctime> #include <cstdlib> #include <iostream> using namespace std; void log_message(const string &message) { ofstream log_file("/tmp/memloggerd.log", ios::app); log_file << "[" << time(0) << "] " << message << endl; } int main() { pid_t pid = fork(); if (pid < 0) { return EXIT_FAILURE; // Fork failed } else if (pid > 0) { return EXIT_SUCCESS; // Parent process terminates } if (setsid() < 0) { return EXIT_FAILURE; // Detach from terminal } int fd_count = sysconf(_SC_OPEN_MAX); for (int i = 0; i < fd_count; ++i) { close(i); // Close all file descriptors } log_message("Demon uruchomiony."); while (true) { system("free >> /tmp/meminfo.log"); log_message("Zapisano stan pamięci i czas."); sleep(10); } return EXIT_SUCCESS; }
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