How to clean up temporary system files in batches (language: C#, C/C++, php, python, java), _PHP tutorial

How to clean up temporary system files in batches (languages: C#, C/C++, php, python, java),

The language debate has been around for a long time. Let’s do some IO experiments (traversal Files with more than 9G, deleted in batches), try to use facts to compare who is better and who is worse. Operating system: win7 64-bit, file package size: 9.68G.

1. Language: C#

Development environment: vs 2013

Total number of lines of code: 43 lines

Time taken: 7 seconds

Code:

 using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 namespaceBatchDelete
 {
 class Program
 {
 static void Main(string[] args)
 {
 //Input directory e:\tmp
 string path;
 Console.WriteLine("Enter the directory to be cleaned:");
 path = Console.ReadLine();
 // start the timer
 Console.WriteLine("Start timing:"+DateTime.Now.ToString("HH:mm:ss"));
 // First traverse the matching search and then loop to delete
 if (Directory.Exists(path))
 {
 Console.Write("Deleting");
 foreach (string fileName in Directory.GetFileSystemEntries(path))
 {
 if (File.Exists(fileName) && fileName.Contains("cachegrind.out"))
 {
 File.Delete(fileName);
 }
 }
 Console.WriteLine("");
 }
 else
 {
 Console.WriteLine("This directory does not exist!");
 }
 // Timer ends
 Console.WriteLine("End time:" + DateTime.Now.ToString("HH:mm:ss"));
 Console.ReadKey();
 }
 }
 }

Operation renderings:

2. Language: C/C++

Development environment: vs 2013

Total number of lines of code: 50 lines

Time taken: 36 seconds

Code:

 #include 
 #include 
 #include 
 #include 
 #include 
 #include 
 #include 
 using namespace std;
 int main(int argc, char * argv[])
 {
 //Input directory e:\tmp
 string strPath;
 cout <<"Enter the directory to be cleaned:" <<endl;
 getline(cin, strPath);
 // start the timer 
 SYSTEMTIME sys_time; //Declare variables
 GetLocalTime(&sys_time); //Set the variable value to local time
 printf("Start timing: %02d:%02d:%02d\n", sys_time.wHour,sys_time.wMinute,sys_time.wSecond);
 // First traverse the matching search and then loop to delete
 namespace fs = boost::filesystem;
 fs::path full_path(fs::initial_path());
 full_path = fs::system_complete(fs::path(strPath, fs::native));
 if (fs::exists(full_path))
 {
 cout <path()) && boost::contains(item_begin->path().string(), "cachegrind.out"))
 {
 fs::remove(item_begin->path());
 }
 }
 }
 cout <<"" <<endl;
 }
 else
 {
 cout <<"This directory does not exist!" <<endl;
 }
 // Timer ends
 GetLocalTime(&sys_time);
 printf("Timeout: %02d:%02d:%02d\n", sys_time.wHour, sys_time.wMinute, sys_time.wSecond);
 system("pause");
 return 0;
 }

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3. Language: PHP

Development environment: Phpstorm

Total number of lines of code: 32 lines

Time taken: 13 seconds

Code:

 <?php
 /**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 16-1-29
 * Time: 9:31 AM
 */
 date_default_timezone_set('prc');
 //Input directory e:\tmp
 $path = 'e:\tmp';
 //start the timer
 echo date("H:i:s",time()) . '
';
 //First traverse the matching search and then loop to delete
 if(is_dir($path))
 {
 echo "Deleting";
 $mydir = dir($path);
 while($file = $mydir->read())
 {
 if(file_exists("$path/$file") && strpos($file, 'cachegrind.out') === 0)
 {
 unlink("$path/$file");
 }
 }
 echo '
';
 }
 else
 {
 echo "This directory does not exist!" . '
';
 }
 //End of timer
 echo date("H:i:s",time()) . '
'; 

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4. Language: Java

Development environment: eclipse

Total number of lines of code: 43 lines

Time taken: 10 seconds

Code:

 package com.yejing;
 import java.io.File;
 import java.text.SimpleDateFormat;
 import java.util.Date;
 import java.util.Scanner;
 public class Test {
 public static void main(String[] args) {
 Scanner s = new Scanner(System.in);
 //Input directory e:\tmp
 String path = null;
 System.out.println("Enter the directory to be cleaned:");
 path = s.next();
 // start the timer
 Date nowTime=new Date();
 SimpleDateFormat time=new SimpleDateFormat("HH:mm:ss");
 System.out.println("Start timing:"+ time.format(nowTime));
 // First traverse the matching search and then loop to delete
 File dir = new File(path);
 if(dir.exists()){
 System.out.print("Deleting");
 File[] fs = dir.listFiles();
 for(int i=0;i<fs.length;i++){
 if(!fs[i].isDirectory()){
 if(fs[i].isFile() && fs[i].exists() && fs[i].getName().contains("cachegrind.out"))
 {
 fs[i].delete();
 }
 }
 }
 System.out.println("");
 }else{
 System.out.println("This directory does not exist!");
 }
 // Timer ends
 nowTime=new Date();
 System.out.println("Start timing:"+ time.format(nowTime));
 }
 }

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5. Language: Python 3.3.5

Development environment: IDLE

Total number of lines of code: 20 lines

Time taken: 10 seconds

Code:

 # -*- coding: utf-8 -*-
 import datetime
 import os
 # Input directory e:\tmp
 path = input("Enter the directory to be cleaned:\n");
 # start the timer
 print("Start timing:",datetime.datetime.now().strftime('%H:%M:%S'));
 # First traverse the matching search and then delete in a loop
 if(os.path.exists(path)):
 print("Deleting");
 for parent,dirnames,filenames in os.walk(path):
 for filename in filenames:
 targetFile = os.path.join(parent,filename)
 if (os.path.isfile(targetFile) and "cachegrind.out" in targetFile):
 os.remove(targetFile)

else:

 print("This directory does not exist!");
 # End of timer
 print("End time:",datetime.datetime.now().strftime('%H:%M:%S')); 

Operation renderings:

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