查找名称为test的文件

Linux Shell，

find  . -name "test" -type f

Java程序，

package com.oracle.test;

import java.io.File;
import java.util.ArrayList;
import java.util.List;

import org.testng.annotations.Test;

public class FindFileTest {
    
    public void findFile(String rootDir, List<String> files) {
        
        File f = new File(rootDir);
        
        if(f.isFile() && f.getName().equals("test")) {
            files.add(f.getAbsolutePath());
        }
        
        File[] fSubs = f.listFiles();
        
        if(fSubs == null || fSubs.length == 0) {
            return;
        }
            
        for(File fSub: fSubs) {
            findFile(fSub.getAbsolutePath(), files);
        }
    }
    
    
    @Test
    void testFindFile() {
        String rootDir = System.getProperty("user.dir");
        List<String> files = new ArrayList<String>();
        findFile(rootDir, files);
        System.out.println(files);
    }
}

程序输出

Screen Shot 2019-04-26 at 6.50.15 AM.png

Python程序，

# coding:utf-8
import os
def findfile(dir,ls=[]):
    child_dirs = os.listdir(dir)
    for child_dir in child_dirs:
        child_dir = dir + os.sep + child_dir
        if os.path.isfile(child_dir) and os.path.basename(child_dir) == 'test':
            ls.append(os.path.abspath(child_dir))
        elif os.path.isdir(child_dir):
            findfile(child_dir, ls)



if __name__ == '__main__':
    pwd = os.getcwd()
    ls = []
    findfile(pwd, ls)
    print(ls)

程序输出，

Screen Shot 2019-04-26 at 7.21.26 AM.png