process.kill(pid[, signal])

• pid <number> 进程ID
• signal <string> | <number> 将发送的信号，类型为string或number。默认为'SIGTERM'。

process.kill()方法将signal发送给pid标识的进程。

信号名称是如'SIGINT' 或 'SIGHUP'的字符串。更多信息，查看Signal Events 和 kill(2)。

如果目标pid不存在，该方法会抛出错误。作为一个特殊例子，信号0可以用于测试进程是否存在。 在Windows平台中，如果pid用于kill进程组，会抛出错误。

注意：即使这个函数的名称是process.kill(),它其实只是发送信号，这点与kill系统调用类似。 发送的信号可能是做一些与kill目标进程无关的事情。

例如:

process.on('SIGHUP', () => {
  console.log('Got SIGHUP signal.');
});

setTimeout(() => {
  console.log('Exiting.');
  process.exit(0);
}, 100);

process.kill(process.pid, 'SIGHUP');

注意: 当Node.js进程接收到了SIGUSR1，Node.js会启动debugger，查看Signal Events。

• pid <number> A process ID
• signal <string> | <number> The signal to send, either as a string or number. Default: 'SIGTERM'.

The process.kill() method sends the signal to the process identified by pid.

Signal names are strings such as 'SIGINT' or 'SIGHUP'. See Signal Events and kill(2) for more information.

This method will throw an error if the target pid does not exist. As a special case, a signal of 0 can be used to test for the existence of a process. Windows platforms will throw an error if the pid is used to kill a process group.

Even though the name of this function is process.kill(), it is really just a signal sender, like the kill system call. The signal sent may do something other than kill the target process.

process.on('SIGHUP', () => {
  console.log('Got SIGHUP signal.');
});

setTimeout(() => {
  console.log('Exiting.');
  process.exit(0);
}, 100);

process.kill(process.pid, 'SIGHUP');

When SIGUSR1 is received by a Node.js process, Node.js will start the debugger, see Signal Events.