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import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import ch.ethz.ssh2.Connection;
import ch.ethz.ssh2.KnownHosts;
import ch.ethz.ssh2.Session;
import ch.ethz.ssh2.StreamGobbler;
public class UsingKnownHosts
{
static KnownHosts database = new KnownHosts();
public static void main(String[] args) throws IOException
{
String hostname = "somehost";
String username = "joe";
String password = "joespass";
File knownHosts = new File("~/.ssh/known_hosts");
try
{
/* Load known_hosts file into in-memory database */
if (knownHosts.exists())
database.addHostkeys(knownHosts);
/* Create a connection instance */
Connection conn = new Connection(hostname);
/* Now connect and use the SimpleVerifier */
conn.connect(new SimpleVerifier(database));
/* Authenticate */
boolean isAuthenticated = conn.authenticateWithPassword(username, password);
if (isAuthenticated == false)
throw new IOException("Authentication failed.");
/* Create a session */
Session sess = conn.openSession();
sess.execCommand("uname -a && date && uptime && who");
InputStream stdout = new StreamGobbler(sess.getStdout());
BufferedReader br = new BufferedReader(new InputStreamReader(stdout));
System.out.println("Here is some information about the remote host:");
while (true)
{
String line = br.readLine();
if (line == null)
break;
System.out.println(line);
}
/* Close this session */
sess.close();
/* Close the connection */
conn.close();
}
catch (IOException e)
{
e.printStackTrace(System.err);
System.exit(2);
}
}
}
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