Linux_C目录扫描程序

#include <unistd.h>
#include <stdio.h>
#include <dirent.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <stdlib.h>

void printdir(const char *dir, int depth) {

    DIR *dp;
    struct dirent *entry;
    struct stat statbuf;
    if((dp = opendir(dir)) == NULL) {
        fprintf(stderr, "cannot open directory: %s\n", dir);
        return ;
    }
    chdir(dir);
    while((entry = readdir(dp)) != NULL) {
        lstat(entry->d_name, &statbuf);
        if(S_ISDIR(statbuf.st_mode)) {
            if(strcmp(entry->d_name, ".") == 0 || \
               strcmp(entry->d_name, "..") == 0 ) {
                   continue;
            }   /*当前目录和上一级目录跳过*/
            printf("%*s%s/\n", depth, "", entry->d_name);
            printdir(entry->d_name, depth + 4);
        }
    }
    chdir("..");
    closedir(dp);
    return ;
}

int main() {
    const char *dir = "/home";
    printf("Directory scan of /home:\n");
    printdir(dir, 0);
    printf("done.\n");
    return 0;
}