How to run UNIX command to a remote SUN machine through Java from Windows

Question

Dear All:
I want to write one Java program which will be run on my Windows Machine.
My Java program will will login in a SUN machine remotely say telnet and run some command.
I want all those command output in my client windows PC for futher processing.
Can anyone help me doing this?
BR,
P. Gupta

Answer 1

import java.net.*;
import java.io.*;
import java.util.*;
public class TelnetSocketDemo {
static String list="";
static String listArr[], hostArr[];
static String host="", lhost="";
public static void main(String[] args)throws IOException
ExecuteUnixCmd obj=new ExecuteUnixCmd();
// InetAddress localMachine = InetAddress.getLocalHost();
// host=localMachine.getHostName();
list=obj.ExecuteUnixCmdMain();
int port=getPort(list,"Live");
System.out.println(port);
Socket sock = null;
String prompt=">";
String output = null;
try
// Connect to the PoleStar process.
sock = new Socket("localhost",port);
sock.setSoTimeout(60000);
// Get the I/O streams for the socket.
PrintWriter out = new PrintWriter(sock.getOutputStream(), true);
InputStream in = sock.getInputStream();
// Get to the silent console port.
// out.println("S");
// readToPrompt(in,area);
// Fetch the response to the command.
out.println("list all");
output = readToPrompt(in,prompt);
//System.out.println(output);
//out.println("quit");
//output=readToPrompt(in);
catch (Exception ex)
String msg = "unable to get Connection for PoleStar";
finally
try
// close socket
sock.close();
catch (Exception ex)
System.out.println(output);
private static String readToPrompt(InputStream in,String prompt)throws IOExcepti
on
byte[] mByte = null;
int iStrt = 0, iLen = 2000, nBytes = 0;
StringBuffer buf = new StringBuffer();
String s = null;
boolean bNotFinished = true;
do
mByte = new byte[2000];
nBytes = in.read(mByte, iStrt, iLen);
if (nBytes == -1)
break;
// lost our TCP/IP connection
// bNotFinished = false;
// Convert byte stream to a string
s = new String(mByte, 0, iStrt + nBytes);
if (prompt.equals("") == false)
if (prompt.equals(">"))
if (s.indexOf(0x04) != -1)
bNotFinished = false;
// the hub sends the prompt at the beginning and the end
else if (s.indexOf(prompt) != -1)
bNotFinished = false;
buf.append(s);
} while (bNotFinished);
return buf.toString();
public static int getPort(String list, String area)
int port;
String listArr[],hostArr[];
String lhost="";
listArr=list.split(",");
for(int i =0; i < listArr.length ; i++)
lhost=listArr;
hostArr=lhost.split("#");
if((hostArr[1].equalsIgnoreCase("connectDev20"))&&(hostArr[0].indexOf(area)!=-
1))
port=Integer.parseInt(hostArr[2]);
return port;
else
continue ;
return 0;