Node.js ChildProcess subprocess.pid用法及代碼示例

subprocess.pid

• <integer> | <undefined>

返回子進程的進程標識符 (PID)。如果子進程由於錯誤而無法生成，則值為 undefined 並發出 error。

const { spawn } = require('node:child_process');
const grep = spawn('grep', ['ssh']);

console.log(`Spawned child pid: ${grep.pid}`);
grep.stdin.end();