来自 fs 的 Node.js stats.nlink 属性。统计等级
原文:https://www . geesforgeks . org/node-js-stats-nlink-property-from-fs-stats-class/
stats.nlink 属性是 fs 内置的应用编程接口。用于获取文件硬链接数量的 Stats 类。
语法:
stats.nlink;
返回值:返回一个数字或 BigInt 值，代表文件的硬链接数。
下面的例子说明了 stats.nlink 属性在 Node.js 中的使用:
例 1:
// Node.js program to demonstrate the
// stats.nlink property
// Accessing fs module
const fs = require('fs');
// Calling fs.Stats stats.nlink for
// files using stat
fs.stat('./filename.txt', (err, stats) => {
if (err) throw err;
console.log("using stat: number of "
+ "hard-links for the file is "
+ stats.nlink);
});
// Using lstat
fs.lstat('./filename.txt', (err, stats) => {
if (err) throw err;
console.log("using lstat: number of "
+ "hard-links for the file is "
+ stats.nlink);
});
// For directories
// Using stat
fs.stat('./', (err, stats) => {
if (err) throw err;
console.log("using stat: number of "
+ "hard-links for the file is "
+ stats.nlink);
});
// Using lstat
fs.lstat('./', (err, stats) => {
if (err) throw err;
console.log("using lstat: number of "
+ "hard-links for the file is "
+ stats.nlink);
});
输出:
using stat: number of hard-links for the file is 1
using lstat: number of hard-links for the file is 1
using stat: number of hard-links for the file is 1
using lstat: number of hard-links for the file is 1
例 2:
// Node.js program to demonstrate the
// stats.nlink property
// Accessing fs module
const fs = require('fs').promises;
// Calling fs.Stats stats.nlink
(async () => {
const stats = await fs.stat('./filename.txt');
console.log("using stat synchronous: number "
+ "of hard-links for the file is "
+ stats.nlink);
})().catch(console.error)
输出:
(node:13780) ExperimentalWarning: The fs.promises API
is experimental
using stat synchronous: number of hard-links for the file is 1
注意:以上程序使用node filename.js命令编译运行，正确使用 file_path。
参考资料:https://nodejs . org/API/fs . html # fs _ stats _ online
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