func ShellExec(args ...string) (string, string, error) {
	cmd := exec.Command(args[0], args[1:]...)

	stderr, err := cmd.StderrPipe()
	if err != nil {
		return "", "", err
	}
	stdout, err := cmd.StdoutPipe()
	if err != nil {
		return "", "", err
	}

	if err := cmd.Start(); err != nil {
		return "", "", err
	}

	errStr, err := ioutil.ReadAll(stderr)
	if err != nil {
		return "", "", err
	}

	outStr, err := ioutil.ReadAll(stdout)
	if err != nil {
		return "", "", err
	}

	return string(outStr), string(errStr)
}