Node.js ChildProcess subprocess.pid用法及代码示例

subprocess.pid

• <integer> | <undefined>

返回子进程的进程标识符 (PID)。如果子进程由于错误而无法生成，则值为 undefined 并发出 error。

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

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