查看文件状态以及级联删除软连接

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

int
main(int argc, char *argv[])
{
struct stat sb;

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

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

printf("File type:                ");

switch (sb.st_mode & S_IFMT) {
case S_IFBLK:  printf("block device\n");            break;
case S_IFCHR:  printf("character device\n");        break;
case S_IFDIR:  printf("directory\n");               break;
case S_IFIFO:  printf("FIFO/pipe\n");               break;
case S_IFLNK:  printf("symlink\n");                 break;
case S_IFREG:  printf("regular file\n");            break;
case S_IFSOCK: printf("socket\n");                  break;
default:       printf("unknown?\n");                break;
}

printf("I-node number:            %ld\n", (long) sb.st_ino);

printf("Mode:                     %lo (octal)\n",
(unsigned long) sb.st_mode);

printf("Link count:               %ld\n", (long) sb.st_nlink);
printf("Ownership:                UID=%ld   GID=%ld\n",
(long) sb.st_uid, (long) sb.st_gid);

printf("Preferred I/O block size: %ld bytes\n",
(long) sb.st_blksize);
printf("File size:                %lld bytes\n",
(long long) sb.st_size);
printf("Blocks allocated:         %lld\n",
(long long) sb.st_blocks);

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(EXIT_SUCCESS);
}

Recursively deleting symbolic link and what it points to