daemon

#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <errno.h>
#include <unistd.h>
#include <syslog.h>
#include <string.h>

int main() {
  pid_t pid, sid;        // Variabel untuk menyimpan PID

  pid = fork();     // Menyimpan PID dari Child Process

  /* Keluar saat fork gagal
  * (nilai variabel pid < 0) */
  if (pid < 0) {
    exit(EXIT_FAILURE);
  }

  /* Keluar saat fork berhasil
  * (nilai variabel pid adalah PID dari child process) */
  if (pid > 0) {
    exit(EXIT_SUCCESS);
  }

  umask(0);

  sid = setsid();
  if (sid < 0) {
    exit(EXIT_FAILURE);
  }

  if ((chdir("/")) < 0) {
    exit(EXIT_FAILURE);
  }

  close(STDIN_FILENO);
  close(STDOUT_FILENO);
  close(STDERR_FILENO);

  while (1) {
    // Tulis program kalian di sini
    pid_t child_id;
    int status;
    if (child_id == 0) {
    // this is child

    char *argv[] = {"mkdir", "-p", "folderku", NULL};
    execv("/bin/mkdir", argv);
  } else {
    // this is parent
    while ((wait(&status)) > 0);
    char *argv[] = {"touch", "folderku/fileku.txt", NULL};
    execv("/usr/bin/touch", argv);
  }
    sleep(30);
  }
}