Usando ssh2 para acessar ambiente unix

package br.org.ecad.testeRemoto;
import java.io.BufferedReader;   
import java.io.IOException;   
import java.io.InputStream;   
import java.io.InputStreamReader;   
import java.io.OutputStream;   
import java.io.PrintStream;   
  
import ch.ethz.ssh2.ChannelCondition;   
import ch.ethz.ssh2.Connection;   
import ch.ethz.ssh2.Session;   
import ch.ethz.ssh2.StreamGobbler;   

public class Fabrica {
 
	   
	    private Connection sshConnection;   
	    private Session sshSession;   
	    private String user;   
	    private String password;   
	    private InputStream stdout;   
	    private InputStream stderr;   
	    private OutputStream stdin;   
	    private int state = 0; //0=stopped, 1=started   
	       
	    public Fabrica(String host, String user, String password) {   
	        sshConnection = new Connection(host);   
	        this.user = user;   
	        this.password = password;   
	        this.state = 0;   
	    }   
	       
	    public void start() {   
	        try {   
	            sshConnection.connect();   
	            boolean isAuthenticated = sshConnection.authenticateWithPassword(user, password);   
	               
	            if (isAuthenticated == false)   
	                throw new IOException("A autenticação Falhou.");   
	               
	            sshSession = sshConnection.openSession();             
	            sshSession.startShell();   
	               
	            stdout = new StreamGobbler(sshSession.getStdout());   
	            stderr = new StreamGobbler(sshSession.getStderr());   
	            stdin = sshSession.getStdin();   
	  
	            read(); //consume login message   
	               
	            this.state = 1;   
	               
	        } catch (IOException e) {   
	            // TODO Auto-generated catch block   
	            this.state = 0;   
	            e.printStackTrace();   
	        } catch (InterruptedException e) {   
	            // TODO Auto-generated catch block   
	            this.state = 0;   
	            e.printStackTrace();   
	        }   
	    }   
	       
	    public String read() throws IOException, InterruptedException{   
	        BufferedReader br = new BufferedReader(new InputStreamReader(stdout));   
	        StringBuffer sb = new StringBuffer();   
	        sshSession.waitForCondition(ChannelCondition.EOF, 5000);   
	        while (br.ready())   
	        {   
	            String line = br.readLine();   
	            sb.append(line);   
	        }         
	        return sb.toString();   
	    }   
	       
	    public String readError() throws IOException, InterruptedException{   
	        BufferedReader br = new BufferedReader(new InputStreamReader(stderr));   
	        StringBuffer sb = new StringBuffer();   
	        sshSession.waitForCondition(ChannelCondition.EOF, 5000);   
	        while (br.ready())   
	        {   
	            String line = br.readLine();   
	            sb.append(line);   
	        }         
	        return sb.toString();   
	    }   
	       
	    public void write(String message){   
	        PrintStream ps = new PrintStream(stdin);           
	        ps.println(message);   
	        ps.flush();   
	    }   
	       
	    public void stop() {   
	        sshSession.close();   
	        sshSession.close();   
	        this.state = 0;   
	    }   
	       
	    public String execCommand(String command){   
	        String msg = "NO_ANSWER";   
	           
	        if (state == 0)   
	            start();       
	           
	        try {   
	            write(command);   
	            msg = read();   
	               
	            if (msg.length() <= 0)   
	                msg = readError();   
	               
	        } catch (IOException e) {   
	            e.printStackTrace();   
	        } catch (InterruptedException e) {   
	            e.printStackTrace();   
	        }   
	           
	        return msg;   
	           
	    }   
	}

package br.org.ecad.testeRemoto;

import java.io.IOException;

public class Teste {

	
	public static void main(String[] args) throws IOException, Exception {
	
		Fabrica fb = new Fabrica("ipServidor", "user", "senha");
		
		fb.start();
		fb.execCommand("rm teste.txt");
		System.out.println(fb.read());
		
		
	}

}