ssh, err := NewSshClient(
		"some-user",
		"some-host",
		22,
		"/Users/some-user/.ssh/id_rsa",
		"pem-password")

	if err != nil {
		log.Printf("SSH init error %v", err)
	} else {
		output, err := ssh.RunCommand("ls")
		fmt.Println(output)
		if err != nil {
			log.Printf("SSH run command error %v", err)
		}
	}