> For the complete documentation index, see [llms.txt](https://trizen.gitbook.io/perl6-rosettacode/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://trizen.gitbook.io/perl6-rosettacode/programming_tasks/h/handle_a_signal.md).

# Handle a signal

We note with glee that the task does not require us to print *consecutive* integers, so we'll print Fibonacci numbers instead. `:-)`

```perl
signal(SIGINT).tap: {
    note "Took { now - INIT now } seconds.";
    exit;
}

for 0, 1, *+* ... * {
    sleep 0.5;
    .say;
}
```

#### Output:

```
0
1
1
2
3
5
8
13
21
34
55
89
^CTook 6.3437449 seconds.
Aborted
```