gistfile1.c

#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <time.h>

int main(int argc, char *argv[])
{
	printf("Hello world\n");

	if (argc != 2) {
		fprintf(stderr, "Usage: %s <pathname>\n", argv[0]);
		exit(1);
	}

	struct stat sb;

	if (stat(argv[1], &sb) == -1) {
		perror("stat");
		exit(1);
	}

	printf("Last status change:       %s", ctime(&sb.st_ctime));
	printf("Last file access:         %s", ctime(&sb.st_atime));
	printf("Last file modification:   %s", ctime(&sb.st_mtime));

	exit(0);
}