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衍生，则该值为 undefined 并触发 error。

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

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

• <integer> | <undefined>

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();