# Listen to OS signals (/docs/guides/process/os-signals)

<!-- agent-signals: reading_time_min: 1 · est_tokens: 157 · updated: 2026-07-28 -->
Related: [Parse command-line arguments](/docs/guides/process/argv.md), [Listen for CTRL+C](/docs/guides/process/ctrl-c.md), [Spawn a child process and communicate using IPC](/docs/guides/process/ipc.md), [Get the process uptime in nanoseconds](/docs/guides/process/nanoseconds.md), [Read stderr from a child process](/docs/guides/process/spawn-stderr.md), [Read stdout from a child process](/docs/guides/process/spawn-stdout.md)

Bun supports the Node.js `process` global, including the `process.on()` method for listening to OS signals.

```ts
process.on("SIGINT", () => {
  console.log("Received SIGINT");
});
```

***

If you don't know which signal to listen for, listen for the [`"beforeExit"`](https://nodejs.org/api/process.html#event-beforeexit) and [`"exit"`](https://nodejs.org/api/process.html#event-exit) events.

```ts
process.on("beforeExit", code => {
  console.log(`Event loop is empty!`);
});

process.on("exit", code => {
  console.log(`Process is exiting with code ${code}`);
});
```

***

See [Utils](/runtime/utils) for more utilities.