How to execute command on remote server through ssh from JMeter script

Now JMeter hasn't sampler for execute command on remote server, but it has beanshell & beanshell framework which can everything what can program languages like Java, Jpython&Jython, Javascript, Perl, Groovy, Ruby, Prolog, VBScript, XSLT, etc.
Below described how with ssh library Ganymed SSH-2 for Java we can write java code, which execute for us command on remote server.
It library you can download from http://code.google.com/p/ganymed-ssh-2/ and should put into JMeter\lib directory.

PS Don't forget check exit code and set IsSuccess constant in accordance with it!!!

import java.io.*;

import java.util.*;

import ch.ethz.ssh2.*;

String hostname = "server";

String username = login;

String password = password;

String command = "uname -a";

// Connect to the server

connection = new Connection( hostname );

connection.connect();

// Authenticate

connection.authenticateWithPassword( username, password );

// Open a session

Session session = connection.openSession();

// Execute the command

session.execCommand( command );

// Read the results

StringBuilder sbOut = new StringBuilder();

StringBuilder sbErr = new StringBuilder();

InputStream stdOut = new StreamGobbler( session.getStdout() );

InputStream stdErr = new StreamGobbler( session.getStderr() );

BufferedReader brOut = new BufferedReader(new InputStreamReader(stdOut));

BufferedReader brErr = new BufferedReader(new InputStreamReader(stdErr));

String lineOut = brOut.readLine();

String lineErr = brErr.readLine();

while( lineOut != null )

{

sbOut.append( lineOut + "\n" );

lineOut = brOut.readLine();

}

while( lineErr != null )

{

sbErr.append( lineErr + "\n" );

lineErr = brErr.readLine();

}

// Close the session

session.close();

// Logout from the server

connection.close();

//Check exit code from shell

if (session.getExitStatus() == 0)

{

//Set beanshell status

IsSuccess = true;

// Return stdout

return sbOut.toString();

}

else

{

//Set beanshell status

IsSuccess = false;

// Return stderr

return sbErr.toString();

}