# Node.js CURD Operations with File System

The Node.js file system module allows you to work with a file system on your computer. We can include the File System module by using the require() method.
```
const fs=require('fs');
```

 The fs module provides the API for interacting with a file system in a manner closely modeled around standard POSIX (Portable Operating System Interface) functions.

we can use the fs module for CURD Operations.

- C=> Create,
- U=> Update,
- R=> Read,
- D=> Delete

✅  Create A file Using fs module
```
const fs=require('fs');

// Create file with file name is newFile.txt
fs.writeFileSync('newFile.text',"New File Created By Usnig Node.js File System")
```
Output:-

![image.png](https://cdn.hashnode.com/res/hashnode/image/upload/v1664782314970/o9wtxBgsC.png align="left")

Note:- By Defaults node.js File System access our projects root directory we can easily changed it by using  path() module
```
const path=require('path');
```
Example:-

```
// modules
const fs=require('fs');
const path=require('path');

//directory path
const fileDirectory=path.join(__dirname,'Operations')
// Create file with file name is newFile.txt
const filePath=`${fileDirectory}/newFile.text`
fs.writeFileSync(filePath,"New File Created By Usnig Node.js File System")
```

Output:-

![image.png](https://cdn.hashnode.com/res/hashnode/image/upload/v1664783820490/KajWa7biX.png align="left")

✅ Update File
Update Files​​ The File System module has methods fs.appendFile()

```
// modules
const { error } = require('console');
const fs=require('fs');
const path=require('path');

//directory path
const fileDirectory=path.join(__dirname,'Operations')
// Create file with file name is newFile.txt
const filePath=`${fileDirectory}/newFile.text`
fs.appendFile(filePath, ' and here we are using fs.appendFile() for updating file text',
(error)=>{
if(!error){
    console.log('File Updated Successfuly...')
}
else{
    console.log('Samething is Wrong...')
}
})
```

console:-

![image.png](https://cdn.hashnode.com/res/hashnode/image/upload/v1664785055669/b-2wX7x-9.png align="left")

Output:-
![image.png](https://cdn.hashnode.com/res/hashnode/image/upload/v1664784987159/qB9UTZJYE.png align="left")

✅ Read File
The File System module has methods fs.readFile() for read files.

```
// modules
const { error } = require('console');
const fs=require('fs');
const path=require('path');
//directory path
const fileDirectory=path.join(__dirname,'Operations')
// Create file with file name is newFile.txt
const filePath=`${fileDirectory}/newFile.text`
fs.readFile(filePath,'UTF-8',(err, data)=>{
   if(data){
    console.log(data)
   }
   else(
    console.log(err)
   )
})
```

Console :-

![image.png](https://cdn.hashnode.com/res/hashnode/image/upload/v1664786299163/P8rJqVvwa.png align="left")

✅ Delete
The File System module has methods fs.unlinkSync() for delete file.

```
// modules
const { error } = require('console');
const fs=require('fs');
const path=require('path');

//directory path
const fileDirectory=path.join(__dirname,'Operations')
// Create file with file name is newFile.txt
const filePath=`${fileDirectory}/newFile.text`
// Delete file 
    fs.unlinkSync(filePath,
        console.log("File Deleted Successfuly")
    );
```
Console:-

![image.png](https://cdn.hashnode.com/res/hashnode/image/upload/v1664788411089/HXSQ6lW3L.png align="left")