package main

import (
	"fmt"
	"os/exec"
	"time"
)

func Ping(host string, timeoutSec int) bool {
	cmd := exec.Command("ping", "-c", "1", "-W", fmt.Sprintf("%d", timeoutSec), host)
	done := make(chan error, 1)
	go func() {
		done <- cmd.Run()
	}()

	select {
	case err := <-done:
		return err == nil
	case <-time.After(time.Duration(timeoutSec+2) * time.Second):
		cmd.Process.Kill()
		return false
	}
}