file_stat.c

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

/**
 * 使用stat函数获得文件信息
 */

void file_stat(char * fileName) {

    struct stat fileStat;
    stat(fileName, &fileStat);

    printf("Information for %s\n", fileName);
    printf("---------------------------\n");
    printf("File Size: \t\t%ld bytes\n",fileStat.st_size);
    printf("Number of Links: \t%ld\n",fileStat.st_nlink);
    printf("File inode: \t\t%ld\n",fileStat.st_ino);

    printf("File Permissions: \t");
    printf( (S_ISDIR(fileStat.st_mode)) ? "d" : "-");
    printf( (fileStat.st_mode & S_IRUSR) ? "r" : "-");
    printf( (fileStat.st_mode & S_IWUSR) ? "w" : "-");
    printf( (fileStat.st_mode & S_IXUSR) ? "x" : "-");
    printf( (fileStat.st_mode & S_IRGRP) ? "r" : "-");
    printf( (fileStat.st_mode & S_IWGRP) ? "w" : "-");
    printf( (fileStat.st_mode & S_IXGRP) ? "x" : "-");
    printf( (fileStat.st_mode & S_IROTH) ? "r" : "-");
    printf( (fileStat.st_mode & S_IWOTH) ? "w" : "-");
    printf( (fileStat.st_mode & S_IXOTH) ? "x" : "-");
    printf("\n\n");

    printf("The file %s a symbolic link\n", (S_ISLNK(fileStat.st_mode)) ? "is" : "is not");
}

int main(void) {

   file_stat("data/test.txt");
}