Can I find server-side hard drive letter using node.js?

Question

有没有办法使用 node.js 查找服务器端硬盘驱动器名称，如 C:、D:、E: 等？

Answer 1

In windows, you can use this command wmic logicaldisk get caption .

In Nodejs, you can spawn a new process to this cammand.

 var exec = require('child_process').exec;
    function showLetter(callback) {
        exec('wmic logicaldisk get caption', function(err, stdout, stderr) {
            if(err || stderr) {
                console.log("root path open failed" + err + stderr);
                return;
            }
            callback(stdout);
        }
    }

Answer 2

We built a module called drivelist do to exactly this, and works in all major operating systems. In Windows, for example, you might get an output similar to this one:

[
    {
        device: '\\\\.\\PHYSICALDRIVE0',
        description: 'WDC WD10JPVX-75JC3T0',
        size: '1000 GB'
        mountpoint: 'C:',
        system: true
    },
    {
        device: '\\\\.\\PHYSICALDRIVE1',
        description: 'Generic STORAGE DEVICE USB Device',
        size: '15 GB'
        mountpoint: 'D:',
        system: false
    }
]

Notice it lists both removable and non-removable drives, although you can distinguish between them by the system property.

Answer 3

Node.js way:

import * as path from 'path';
const cwdOSRoot = path.parse(process.cwd()).root;
const fileOSRoot = path.parse(__dirname).root;

Important to note, one will get you the letter of the current working directory , the other the drive letter of the drive where the file containing this code is on . You can replace process.cwd() and __dirname with any absolute path to get the drive letter.

Second way:

import * as os from 'os';
import * as path from 'path';
const cwdOSRoot = os.platform() === 'win32' ? `${process.cwd().split(path.sep)[0]}:` : '/';
const fileOSRoot = os.platform() === 'win32' ? `${__dirname.split(path.sep)[0]}:` : '/';

Then just use path.join , path.normalize , path.resolve etc.. This code will work for any OS.