Process.Kill() on child processes

Question

I'm trying to stop the process started with exec.Command("go", "run", "server.go") and all its child processes.

But when I call cmd.Process.Kill() and the go process stops, the child process (a web server in server.go) continues to run.

package main

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

func run() *exec.Cmd {
    cmd := exec.Command("go", "run", "server.go")

    err := cmd.Start()
    if err != nil {
        panic(err)
    }

    return cmd
}

func main() {
    cmd := run()

    time.Sleep(time.Second * 2)

    err := cmd.Process.Kill()
    if err != nil {
        panic(err)
    }
    cmd.Process.Wait()

    // === Web server is still running! ===

    fmt.Scanln()
}

It looks like Process.Kill() only stops the go (run) process, but leaves its child process (web server) running.

^C kills the whole process group, including all child (and sub-child) processes. How can I do the same?

I tried cmd.Process.Signal(os.Interrupt), syscall.SIGINT, syscall.SIGQUIT and syscall.SIGKILL, none of which did anything.

Answer 1

Don't use the go run command. Use the go install command to install your packages and programs and then execute your program.