| # Introduction |
| |
| Sometimes an application needs to save internal state or perform some cleanup activity before it exits, or needs to be able to reload a configuration file or write a memory/cpu profile on demand. In UNIX-like operating systems, signals can accomplish these tasks. |
| |
| # Example |
| |
| The following code demonstrates a program that waits for an interrupt signal and removes a temporary file when it occurs. |
| |
| ```go |
| package main |
| |
| import ( |
| "io/ioutil" |
| "os" |
| "os/signal" |
| ) |
| |
| func main() { |
| f, err := ioutil.TempFile("", "test") |
| if err != nil { |
| panic(err) |
| } |
| defer os.Remove(f.Name()) |
| sig := make(chan os.Signal, 1) |
| signal.Notify(sig, os.Interrupt) |
| <-sig |
| } |
| ``` |
