1 /*
   2 
   3 Source code follows: adapted from Exec.java found in jsch examples
   4 
   5 By vaidya.anand at gmail.com
   6 
   7 anand@aries5672:~/workspace/samplejsch$ cat samplejsch.java
   8 
   9 */
  10 
  11 import com.jcraft.jsch.*;
  12 import java.io.*;
  13 
  14 public class samplejsch {
  15 
  16         public static void main(String[] args) {
  17 
  18                 try{
  19                       JSch jsch=new JSch();
  20 
  21                       String host=System.getProperty("user.name") + "@localhost";
  22                       if(args.length>0){
  23                         host=args[0];
  24                       }
  25                       String user=host.substring(0, host.indexOf('@'));
  26 
  27                       host=host.substring(host.indexOf('@')+1);
  28                       Session session=jsch.getSession(user, host, 22);
  29 
  30                       jsch.setKnownHosts("/home/anand/.ssh/known_hosts");
  31                       jsch.addIdentity("/home/anand/.ssh/id_rsa");
  32 
  33 // If two machines have SSH passwordless logins setup, the following line is not needed:
  34                       session.setPassword("YOURPASSWORD");
  35                       session.connect();
  36 
  37                       String command="ps -ef;date;hostname";
  38 //                    command=args[1];
  39 
  40                       Channel channel=session.openChannel("exec");
  41                       ((ChannelExec)channel).setCommand(command);
  42 
  43                       //channel.setInputStream(System.in);
  44                       channel.setInputStream(null);
  45 
  46                       ((ChannelExec)channel).setErrStream(System.err);
  47 
  48                       InputStream in=channel.getInputStream();
  49 
  50                       channel.connect();
  51                       byte[] tmp=new byte[1024];
  52                       while(true){
  53                         while(in.available()>0){
  54                           int i=in.read(tmp, 0, 1024);
  55                           if(i<0)break;
  56                           System.out.print(new String(tmp, 0, i));
  57                         }
  58                         if(channel.isClosed()){
  59                           System.out.println("exit-status: "+channel.getExitStatus());
  60                           break;
  61                         }
  62                         try{Thread.sleep(1000);}catch(Exception ee){ee.printStackTrace();}
  63                       }
  64                       channel.disconnect();
  65                       session.disconnect();
  66                     }
  67                     catch(Exception e){
  68                       System.out.println(e);
  69                     }
  70 
  71 
  72         }       //end main
  73 
  74 }       //end class
  75 
  76 // ========================================================================================
  77