............
        var cmd = sshClient.CreateCommand("apt-get update -y");
        cmd.Execute();
        System.Threading.Thread.Sleep(1000 * 20);
        ............
        cmd = sshClient.CreateCommand("cd folder && chmod +x script.sh && bash script.sh ");
        cmd.Execute();
        System.Threading.Thread.Sleep(1000 * 180);
        sshClient.Disconnect();
        return "ok";