Terminating a Process Started with os/exec in Golang

Question

Is there a way to terminate a process started with os.exec in Golang? For example (from http://golang.org/pkg/os/exec/#example_Cmd_Start),

cmd := exec.Comma         


        

Answer 1

A simpler version without select and channels.

func main() {
    cmd := exec.Command("cat", "/dev/urandom")
    cmd.Start()
    timer := time.AfterFunc(1*time.Second, func() {
        err := cmd.Process.Kill()
        if err != nil {
            panic(err) // panic as can't kill a process.
        }
    })
    err := cmd.Wait()
    timer.Stop()

    // read error from here, you will notice the kill from the 
    fmt.Println(err)
}

Well, after consulting some experienced go programmer, this is apparently not a GOly enough way to solve the problem. So please refer to the accepted answer.

---

Here is an even shorter version, and very straight forward. BUT, possibly having tons of hanging goroutines if timeout is long.

func main() {
    cmd := exec.Command("cat", "/dev/urandom")
    cmd.Start()
    go func(){
        time.Sleep(timeout)
        cmd.Process.Kill()
    }()
    return cmd.Wait()
}