Minix1.1/usr/src/commands/update.c

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/* update - do sync periodically		Author: Andy Tanenbaum */

#include "signal.h"

main()
{
  int fd, buf[2];


  /* Disable SIGTERM */
  signal(SIGTERM, SIG_IGN);

  /* Open some files to hold their inodes in core. */
  close(0);
  close(1);
  close(2);

  open("/bin", 0);
  open("/lib", 0);
  open("/etc", 0);
  open("/tmp", 0);


  /* Flush the cache every 30 seconds. */
  while (1) {
	sync();
	sleep(30);
  }
}