ssh.net Example - Keybased Authentication, File Upload, Shell Commands

ssh.cs

/*
    get SSH.NET (BSD License: http://sshnet.codeplex.com/license)
    
    with NuGet:
    >Install-Package SSH.NET -Version 2013.4.7
    
    or just get the dll from here: http://j.mp/sshNet
    
*/
using System;
using System.Collections.Generic;
using Renci.SshNet; /* reference needed: Renci.SshNet.dll */

class Program
{
    static void Main(string[] args){

        // Setup Credentials and Server Information
        ConnectionInfo ConnNfo = new ConnectionInfo("hostOrIP",22,"username",
            new AuthenticationMethod[]{

                // Pasword based Authentication
                new PasswordAuthenticationMethod("username","password"),

                // Key Based Authentication (using keys in OpenSSH Format)
                new PrivateKeyAuthenticationMethod("username",new PrivateKeyFile[]{ 
                    new PrivateKeyFile(@"..\openssh.key","passphrase")
                }),
            }
        );

        // Execute a (SHELL) Command - prepare upload directory
        using (var sshclient = new SshClient(ConnNfo)){
            sshclient.Connect();
            using(var cmd = sshclient.CreateCommand("mkdir -p /tmp/uploadtest && chmod +rw /tmp/uploadtest")){
                cmd.Execute();
                Console.WriteLine("Command>" + cmd.CommandText);
                Console.WriteLine("Return Value = {0}", cmd.ExitStatus);
            }            
            sshclient.Disconnect();
        }

        // Upload A File
        using (var sftp = new SftpClient(ConnNfo)){
            string uploadfn = "Renci.SshNet.dll";

            sftp.Connect();
            sftp.ChangeDirectory("/tmp/uploadtest");
            using (var uplfileStream = System.IO.File.OpenRead(uploadfn)){
                sftp.UploadFile(uplfileStream, uploadfn, true);
            }
            sftp.Disconnect();
        }

        // Execute (SHELL) Commands
        using (var sshclient = new SshClient(ConnNfo)){
            sshclient.Connect();

            // quick way to use ist, but not best practice - SshCommand is not Disposed, ExitStatus not checked...
            Console.WriteLine(sshclient.CreateCommand("cd /tmp && ls -lah").Execute());
            Console.WriteLine(sshclient.CreateCommand("pwd").Execute());
            Console.WriteLine(sshclient.CreateCommand("cd /tmp/uploadtest && ls -lah").Execute());
            sshclient.Disconnect();
        }
        Console.ReadKey();
    }
}

You rock!! Thanks!

Many thanks for developing this. I am able to connect in one go.

It rocks! thnx for examples

Thank you. It's great example. :)

Any idea how to provide a option like StrictHostKeyChecking=no to the ssl client?

Very helpfull. Thx!

Any idea how to provide a option like StrictHostKeyChecking=no to the ssl client?

please help

Hi All,
I've been struggling with just running a basic command on a unix host.
Example what I have come up with
`Public Function CreateConnectionInfo() as ConnectionInfo
Dim connNfo as New PasswordConnectionInfo("host", "user", "pw")

Using sshClient = New sshClient(connNfo)
sshClient.Connect()

Using cmd = sshClient.CreateCommand("ls -ltr")
    cmd.Execute()
    MsgBox("command>" & cmd.CommandText)
    MsgBox("Return Value = {0}, cmd.ExitStatus)
End Using

End Using
`
When I check the values being send I never see the PW and the host refuses the connection. I had to have my pw reset about 20 times today..lol

My wish is to use public/private keys instead of a user/pw. Which i have used/created with putty and use it everyday.

Any suggestions would be greatly appreciated.

WannaBe Programmer
MW