PowerShell, read/write to SSH.NET streams

Question

I would like to connect to a server via SSH, with PowerShell, and then change to a different user.

In order to accomplish connecting to a server wit

Answer 1

Using an example from https://sshnet.codeplex.com/discussions/439210, I was able to solve my problem with the below code. The main issue was that I was creating two different streams for input/output and I needed to just use one stream.

$server = "server1"
$port = 22
$username = "user1"
$password = "password1"

###############################################################

function ReadStream($reader)
{
    $line = $reader.ReadLine();
    while ($line -ne $null)
    {
        $line
        $line = $reader.ReadLine()
    }
}

function WriteStream($cmd, $writer, $stream)
{
    $writer.WriteLine($cmd)
    while ($stream.Length -eq 0)
    {
        start-sleep -milliseconds 500
    }
}

###############################################################

$ssh = new-object Renci.SshNet.SshClient($server, $port, $username, $password)
$ssh.Connect()

$stream = $ssh.CreateShellStream("dumb", 80, 24, 800, 600, 1024)

$reader = new-object System.IO.StreamReader($stream)
$writer = new-object System.IO.StreamWriter($stream)
$writer.AutoFlush = $true

while ($stream.Length -eq 0)
{
    start-sleep -milliseconds 500
}
ReadStream $reader

WriteStream "su - root" $writer $stream
ReadStream $reader

WriteStream "password" $writer $stream
ReadStream $reader

WriteStream "pwd" $writer $stream
ReadStream $reader

$stream.Dispose()
$ssh.Disconnect()
$ssh.Dispose()