linux c 查找指定文件

find /path/to/start -name "filename"

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

void search_file(const char *path, const char *filename) {
    DIR *dir;
    struct dirent *entry;
    struct stat statbuf;

    if (!(dir = opendir(path))) {
        perror("opendir");
        return;
    }

    while ((entry = readdir(dir)) != NULL) {
        char fullpath[1024];
        snprintf(fullpath, sizeof(fullpath), "%s/%s", path, entry->d_name);

        if (lstat(fullpath, &statbuf) == -1) {
            perror("lstat");
            continue;
        }

        if (S_ISDIR(statbuf.st_mode)) {
            if (strcmp(entry->d_name, ".") != 0 && strcmp(entry->d_name, "..") != 0) {
                search_file(fullpath, filename);
            }
        } else {
            if (strcmp(entry->d_name, filename) == 0) {
                printf("Found file: %s\n", fullpath);
            }
        }
    }

    closedir(dir);
}

int main(int argc, char *argv[]) {
    if (argc != 3) {
        fprintf(stderr, "Usage: %s <directory> <filename>\n", argv[0]);
        return 1;
    }

    search_file(argv[1], argv[2]);
    return 0;
}