osutil.go
func Exec(cmd string, args ...string) error {
	c := exec.Command(cmd, args...)
	c.Stdin = os.Stdin
	c.Stdout = os.Stdout
	c.Stderr = os.Stderr

	if err := c.Run(); err != nil {
		return err
	}
	return nil
}
func Exec(cmd string, args ...string) error {
	c := exec.Command(cmd, args...)
	c.Stdin = os.Stdin
	c.Stdout = os.Stdout
	c.Stderr = os.Stderr

	if err := c.Run(); err != nil {
		return err
	}
	return nil
}
// Exec executes a command setting both standard input, output and error.