Node.js fs.unlinkSync() 方法

fs.unlinkSync() 方法用于从文件系统中同步删除文件或符号链接。此函数不适用于目录，因此建议使用 fs.rmdir() 删除目录。
句法：

fs.unlinkSync( path )

参数：此方法接受一个如上所述和如下所述的参数：

• 路径：它是一个字符串、缓冲区或 URL，表示必须删除的文件或符号链接。

下面的示例说明了 Node.js 中的fs.unlinkSync() 方法：
示例 1：此示例从文件系统中删除一个文件。

javascript

// Node.js program to demonstrate the
// fs.unlinkSync() method
  
// Import the filesystem module
const fs = require('fs');
  
// Get the files in current directory
// before deletion
getFilesInDirectory();
  
// Delete readme.md
fs.unlinkSync("readme.md");
console.log("\nFile readme.md is deleted");
  
// Get the files in current directory
// after deletion
getFilesInDirectory();
  
// Function to get current filenames
// in directory with specific extension
function getFilesInDirectory() {
  console.log("\nFiles present in directory:");
  let files = fs.readdirSync(__dirname);
  files.forEach(file => {
    console.log(file);
  });
}

输出：

Files present in directory:
index.html
index.js
package.json
readme.md

File readme.md is deleted

Files present in directory:
index.html
index.js
package.json

示例 2：此示例从文件系统中删除符号链接。

javascript

// Node.js program to demonstrate the
// fs.unlinkSync() method
  
// Import the filesystem module
const fs = require('fs');
  
// Creating symlink to file
fs.symlinkSync(__dirname + "\\readme.md", "symlinkToReadme");
console.log("\nSymbolic link to readme.md created");
  
// Function to get current filenames
// in directory with specific extension
getFilesInDirectory();
  
// Deleting symbolic link to readme.md
fs.unlinkSync("symlinkToReadme");
console.log("\nSymbolic link to readme.md deleted")
  
getFilesInDirectory();
  
// Function to get current filenames
// in directory with specific extension
function getFilesInDirectory() {
  console.log("\nFiles present in directory:");
  let files = fs.readdirSync(__dirname);
  files.forEach(file => {
    console.log(file);
  });
}

输出：

Symbolic link to readme.md created

Files present in directory:
index.html
index.js
package.json
readme.md
symlinkToReadme

Symbolic link to readme.md deleted

Files present in directory:
index.html
index.js
package.json
readme.md

参考： https://nodejs.org/api/fs.html#fs_fs_unlinksync_path