[Golang] execute long running job and streaming the realtime output

main.go

func main() {
	cmd := exec.Command("sh", "-c", "cd ../../bin/worker; ./run.sh")
    // some command output will be input into stderr
    // e.g.
    // cmd := exec.Command("../../bin/master_build")
    // stderr, err := cmd.StderrPipe()
	stdout, err := cmd.StdoutPipe()
	if err != nil {
		fmt.Println(err)
	}

	err = cmd.Start()
	fmt.Println("The command is running")
	if err != nil {
		fmt.Println(err)
	}
	
	// print the output of the subprocess
	scanner := bufio.NewScanner(stdout)
	for scanner.Scan() {
		m := scanner.Text()
		fmt.Println(m)
	}
	cmd.Wait()
}

Not sure if anyone is still looking for a solution, but I found that this project seems to work well as a wrapper for os/exec that supports streaming output from a go routine.
https://github.com/go-cmd/cmd

nobody search a thing like that :) not tested but thx.