packagemain

import"fmt"
import"os"
import"os/signal"
import"syscall"

funcmain() {

// Go signal notification works by sending `os.Signal`
// values on a channel. We'll create a channel to
// receive these notifications (we'll also make one to
// notify us when the program can exit).
 sigs := make(chanos.Signal,1)
 done := make(chanbool,1)

// `signal.Notify` registers the given channel to
// receive notifications of the specified signals.
 signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)

// This goroutine executes a blocking receive for
// signals. When it gets one it'll print it out
// and then notify the program that it can finish.
gofunc() {
 sig := <-sigs
 fmt.Println()
 fmt.Println(sig)
 done <- true
 }()

// The program will wait here until it gets the
// expected signal (as indicated by the goroutine
// above sending a value on `done`) and then exit.
 fmt.Println("awaiting signal")
 <-done
 fmt.Println("exiting")
}