private static void sshCp_OnTransferEnd(string src, string dst, int transferredBytes, int totalBytes, string message)
		{
			if(progressBar!=null)
			{
				progressBar.Update(transferredBytes, totalBytes, message);
				progressBar=null;
			}
		}
		private static void sshCp_OnTransferStart(string src, string dst, int transferredBytes, int totalBytes, string message)
		{
			Console.WriteLine();
			progressBar = new ConsoleProgressBar();
			progressBar.Update(transferredBytes, totalBytes, message);
		}