How can get complete copy of file ?

Projects Programming
1

I tried to create some

arduino ide and also write different data to these files.

my question(dout) is ,
how can i get a files that i am written int??

2

Can you not just open a file and read from it ?

3

https://arduino.stackexchange.com/questions/62239/how-can-get-spiffs-file-from-esp8266

4 
#include "FS.h"
int fileSize;
int bytesRead;
String fileName;

void setup()
{
  Serial.begin(115200);
  SPIFFS.begin();
  Dir dir = SPIFFS.openDir("/");
  while (dir.next())
  {
    fileName = dir.fileName();
    Serial.print(dir.fileName());
    File f = dir.openFile("r");
    fileSize = (f.size());
    Serial.print("\t\t");
    Serial.println(fileSize);
    readTheFile();
    f.close();
  }
}
void loop()
{
}

void readTheFile()
{
  File f = SPIFFS.open(fileName, "r");
  if (!f)
  {
    Serial.println("file open failed");
  }
  fileSize = (f.size());
  Serial.println("====== Reading from SPIFFS file =======");
  char buffer[10000];   //adjust this to just more than the largest file size expected
  bytesRead = 0;
  while (bytesRead < fileSize)
  {
    buffer[bytesRead] = f.read();
    bytesRead++;
    buffer[bytesRead] = '\0';
  }
  f.close();
  Serial.println(buffer);
}