script linux ejecutar comando y password

#
private string Execute(string user, string password, string hostname, string command)
{
    var result = string.Empty;
    var info = new ProcessStartInfo("ssh", user + "@" + hostname + " " + command)
    {
        RedirectStandardOutput = true,
        RedirectStandardError = true,
        UseShellExecute = false,
        CreateNoWindow = true,
        WindowStyle = ProcessWindowStyle.Hidden,
        ErrorDialog = false
    };
    using (var proc = Process.Start(info))
    {
        if (proc != null)
        {
            proc.ErrorDataReceived += (sender, e) => Console.WriteLine(e.Data);
            proc.OutputDataReceived += (sender, e) => Console.WriteLine(e.Data);

            proc.BeginOutputReadLine();
            proc.BeginErrorReadLine();

            proc.WaitForExit();
        }
    }
    return result;
}