@wuyuchentr/wmic-query

Cross-platform system info query: CPU, memory, disk, processes. Zero dependencies.

Works on Linux, macOS, and Windows.

Install

npm install @wuyuchentr/wmic-query

Usage

const { getCPUUsage, getCPUInfo, getMemoryInfo, getDiskFree, getDisks, getProcessList } = require('@wuyuchentr/wmic-query');

CPU

await getCPUUsage();
// → { user: 25, system: 10, idle: 65 }

getCPUInfo();
// → { cores: 8, model: 'Apple M3', speed: 2400 }

Memory

getMemoryInfo();
// → { total: 17179869184, free: 4294967296, used: 12884901888, percent: 75 }

Disk

await getDiskFree('/');
// → 1234567890 (bytes)

await getDisks();
// → [{ mount: '/', total: 1e12, used: 5e11, free: 5e11, fs: 'apfs' }]

Processes

await getProcessList();
// → [{ pid: 123, name: 'node', cpuPercent: 2.5, memPercent: 1.2, rss: 12345678, user: 'me' }]

Platform notes

• CPU: uses os.cpus() (cross-platform). getCPUUsage() samples twice over 100ms.
• Memory: uses os.totalmem() / os.freemem() (cross-platform).
• Disk: runs df on POSIX, wmic on Windows.
• Process: runs ps on POSIX, wmic on Windows.