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Node.js stats.blksize屬性用法及代碼示例

stats.blksize屬性是fs.Stats類的內置應用程序編程接口,用於獲取文件係統中I /O操作的塊大小(以字節為單位)。

用法:

stats.blksize;

返回值:它返回一個數字或BigInt值,該值表示文件係統中I /O操作的塊大小(以字節為單位)。

以下示例說明了Node.js中stats.blksize的使用:

範例1:



// Node.js program to demonstrate the    
// stats.blksize property 
  
// Accessing fs module 
const fs = require('fs'); 
  
// Calling fs.Stats stats.blksize 
// using stat 
fs.stat('./', (err, stats) => { 
  if (err) throw err; 
  console.log("using stat:the block "
    + "size for I/O operations in the"
    + " file system in bytes is "
    + stats.blksize); 
}); 
   
// Using lstat 
fs.lstat('./', (err, stats) => { 
  if (err) throw err; 
  console.log("using lstat:the block "
    + "size for I/O operations in the "
    + "file system in bytes is "
    + stats.blksize); 
});

輸出:

using stat:the block size for I/O operations 
in the file in bytes is  4096
using lstat:the block size for I/O operations 
in the file in bytes is  4096

範例2:

// Node.js program to demonstrate the    
// stats.blksize property 
  
// Accessing fs module 
const fs = require('fs').promises; 
  
// Calling fs.Stats stats.blksize 
(async () => { 
    const stats = await fs.stat('./'); 
    console.log("using stat synchronous:"
        + "the block size for I/O operations"
        + " in the file system in bytes is " 
        + stats.blksize); 
})().catch(console.error)

輸出:

(node:6376) ExperimentalWarning:The fs.promises
API is experimental
using stat synchronous:the block size for I/O 
operations in the file system in bytes is  4096

注意:上麵的程序將通過使用node filename.js命令並正確使用file_path。

參考: https://nodejs.org/api/fs.html#fs_stats_blksize




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注:本文由純淨天空篩選整理自anwesha0107大神的英文原創作品 Node.js stats.blksize Property from fs.Stats Class。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。