subprocess.pid

• 类型：<integer> | <undefined>

返回子进程的进程标识符 (PID)。如果由于错误导致子进程无法启动，则该值为 undefined，并且会触发 error。

🌐 Returns the process identifier (PID) of the child process. If the child process fails to spawn due to errors, then the value is undefined and error is emitted.

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

console.log(`Spawned child pid: ${grep.pid}`);
grep.stdin.end();import { spawn } from 'node:child_process';
const grep = spawn('grep', ['ssh']);

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