How to do it…

1. Open the console and create the folder chapter01/recipe07.
2. Navigate to the directory.
3. Create the main.go file with the following content:

        package main

        import (
          "fmt"
          "os"
          "os/signal"
          "syscall"
        )

        func main() {

          // Create the channel where the received
          // signal would be sent. The Notify
          // will not block when the signal
          // is sent and the channel is not ready.
          // So it is better to
          // create buffered channel.
          sChan := make(chan os.Signal, 1)

          // Notify will catch the
          // given signals and send
          // the os.Signal value
          // through the sChan.
          // If no signal specified in 
          // argument, all signals are matched.
          signal.Notify(sChan,
            syscall.SIGHUP,
            syscall.SIGINT,
            syscall.SIGTERM,
            syscall.SIGQUIT)

          // Create channel to wait till the
          // signal is handled.
          exitChan := make(chan int)
          go func() {
            signal := <-sChan
            switch signal {
              case syscall.SIGHUP:
                fmt.Println("The calling terminal has been closed")
                exitChan <- 0

              case syscall.SIGINT:
                fmt.Println("The process has been interrupted by CTRL+C")
                exitChan <- 1

              case syscall.SIGTERM:
                fmt.Println("kill SIGTERM was executed for process")
                exitChan <- 1

              case syscall.SIGQUIT:
                fmt.Println("kill SIGQUIT was executed for process")
                exitChan <- 1
            }
          }()

          code := <-exitChan
          os.Exit(code)
        }

1. Run the code by executing go run main.go.
2. Send the SIGINT signal to the application by pressing CTRL + C.
3. See the output: