/* demonstrate easy daemonization */
/* (c) 2005-2008, by Nopius */
#include <unistd.h>
#include <signal.h>
#include <stdlib.h>
int
main()
{
  struct sigaction act;
  /* some info about me */
  printf("Pid: %d, Ppid: %d, Pgrp: %d, Sid: %d\n", getpid(), getppid(), 
    getpgrp(), getsid(0));

  act.sa_handler=SIG_IGN;
  sigaction(SIGHUP, &act, NULL); /* ignore termilal disconnect */

  if (fork()==0){ 
  /* loose controlling tty with setsid */
  setsid();
    do 
    {
      printf("I'm a daemon\n");
      sleep(5);
    } while(1);
  } 
  exit(0);
}