Running ssh in xterm using Runtime.exec !! URGENT

I am not able to run the following command using Runtime.exec() but if the same command is executed in shell it gets executed.
I am working on solais 8
String toExecStr =
"xterm -e /bin/sh -c \"ssh [email protected] || echo SSH failed. Press any key to quit.; read a \"";
System.out.println("Running command :" + toExecStr);
try {
Process p = Runtime.getRuntime().exec(toExecStr);
catch(Exception e){
e.printStackTrace();
Any clues .. am i missing something Is there some problem with solaris command ..

Can some body help me solve this ???

Similar Messages

Can we run a java application using Runtime.exec()?

Can we run a java application using Runtime.exec()?
If yes what should i use "java" or "javaw", and which way?
r.exec("java","xyz.class");

The best way to run the java application would be to dynamiically load it within the same JVM. Look thru the class "ClassLoader" and the "Class", "Method" etc...clases.
The problem with exec is that it starts another JVM and moreover you dont have the interface where you can throw the Output directly.(indirectly it can be done by openong InputStreams bala blah............). I found this convenient. I am attaching part of my code for easy refernce.
HIH
ClassLoader cl = null;
Class c = null;
Class cArr[] ;
Method md = null;
Object mArr[];
cl = ClassLoader.getSystemClassLoader();
try{
     c = cl.loadClass(progName.substring(0,progName.indexOf(".class")) );
} catch(ClassNotFoundException e) {
System.out.println(e);
     cArr = new Class[1] ;
     try{
     cArr[0] = Class.forName("java.lang.Object");
     } catch(ClassNotFoundException e) {
     System.out.println(e);
     mArr = new Object[1];
     try{
     md = c.getMethod("processPkt", cArr);
     } catch(NoSuchMethodException e) {
     System.out.println(e);
     } catch(SecurityException e) {
     System.out.println(e);
try {
processedPkt = md.invoke( null, mArr) ;
} catch(IllegalAccessException e) {
          System.out.println(e);
} catch(IllegalArgumentException e) {
          System.out.println(e);
}catch(InvocationTargetException e) {
          System.out.println(e);
}catch(NullPointerException e) {
          System.out.println(e);
}catch(ExceptionInInitializerError e) {
          System.out.println(e);
}

How to run db2 command by using Runtime exec

Hello
I am using java. When i am runing db2 command by using Runtime.exec( String cmd, String[] env ). I gave the environment path
DB2CLP=6259901
DB2DRIVER=D:\ibm\db2\java\db2java.zip
DB2HOME=D:\ibm\db2
DB2INSTANCE=DB2
DB2MMTOP=D:\CMBISS
but still I am getting error message
"DB21061E Command line environment not initialized"
after setting the above path in the cmd It is working fine. When i am trying thro java programm i am getting the above error. Can I get answer for this.
bhaski.

Before you can execute DB2 commands you have to open a DB2 CLP. The following code will do so:
import java.io.IOException;
public class Db2 {
     public static void main(String args[]) {
          try {
               Runtime rt = Runtime.getRuntime();
               Process child = rt.exec("db2cmd");
               child.waitFor();
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Running jar in unix using runtime exec command

Hi, i want to run a jar in unix with the runtime.exec() command,
but i couldn't manage to do it
Here is the code
dene = new String[] {"command","pwd","java tr.com.meteksan.pdocs.pdf.html2pdf "+ f.getAbsolutePath() + " " + pdfPath};
          System.out.println("Creating PDF");
          FileOutputStream fos = new FileOutputStream(new File(pdfPath));
          Runtime rt = Runtime.getRuntime();
          for(int i = 0 ; i < dene.length ; i++)
              System.out.println("komut = "+dene);
          Process proc = rt.exec(dene);
          // any error message?
          StreamGobbler errorGobbler = new StreamGobbler(proc.getErrorStream(), "ERROR"); // any output?
          StreamGobbler outputGobbler = new StreamGobbler(proc.getInputStream(), "OUTPUT", fos); // kick them off
          errorGobbler.start();
          outputGobbler.start();
          // any error???
          int exitVal = proc.waitFor();
          System.out.println("ExitValue: " + exitVal);
          fos.flush();
          fos.close();
when i run this program, the exit value of the process is 0
can you tell me whats wrong?

i changed the string to be executed to:
                         dene = new String[] {"sh","-c","java -classpath \"" + Sabit.PDF_TOOL_PATH
                              + "avalon-framework-4.2.0.jar:" + "" + Sabit.PDF_TOOL_PATH
                              + "batik-all-1.6.jar:" + Sabit.PDF_TOOL_PATH
                              + "commons-io-1.1.jar:" + Sabit.PDF_TOOL_PATH
                              + "commons-logging-1.0.4.jar:" + "" + Sabit.PDF_TOOL_PATH
                              + "fop.jar:" + Sabit.PDF_TOOL_PATH + "serializer-2.7.0.jar:"
                              + Sabit.PDF_TOOL_PATH + "Tidy.jar:" + Sabit.PDF_TOOL_PATH
                              + "xalan-2.7.0.jar:" + "" + Sabit.PDF_TOOL_PATH
                              + "xercesImpl-2.7.1.jar:" + Sabit.PDF_TOOL_PATH
                              + "xml-apis-1.3.02.jar:" + Sabit.PDF_TOOL_PATH
                              + "xmlgraphics-commons-1.0.jar:" + "" + Sabit.PDF_TOOL_PATH
                              + "html2pdf.jar:\" tr.com.meteksan.pdocs.pdf.html2pdf "
                              + f.getAbsolutePath() + " " + pdfPath};
and it works now ;)
thanks...

Running MS-DOS commands using Runtime.exec()

Is there any way to run the dos commands like copy and del from our java program? Actually I want to implement a visual console kind of thing and have to transfer the commands to the prompt and get the result string that is to be displayed in a JTextArea?
Please help me. It'll be very nice of you...thanks

I can help you in two ways:
o by telling you to run cmd.exe and pass the rest as parameters.
o by pointing out this is the wrong forum for you equestion.

Executing bat file without using Runtime.exec()??

Hi all
From my java App ,I am running a bat file. This is what I did:
When I press 'execute' button inside my App, it runs a bat file through Runtime.exec() method. Since exec() runs it through cmd.exe, get a DOS window when I press Execute button. If I manually runs my app from command promt , I dont get it. But I have to create a short cut of my main class in the desktop. This is happening when I run my app from desktop icon.
Now I want to eleminate DOS popup everytime I press execute button. Would anyone pls give an idea how to run bat file without using Runtime.exec()? Any suggestion will be helpful.
Thanks

jscell
Thanks for taking time to answer to my problem .
Here is what my problem: I create a shortcut of my main class in the desktop. Through this shortcut ,I run my java App. My App has a execute button, When I press this button , It run another bat file through Runtime.exec() method, and show some result in the result PAnel. NOw what happen , I get a DOS command window , everytime I press execute button. , Which is very annoying . But If I run my App thorugh command promt by executing: "java myApp", then I dont get this DOS popup. But I have to create a shortcut in the desktop, so other can use it conveniently.
NOw I am not sure why I am getting this DOS window in the middle of my Application. IS it for using Runtime.exec() method? or for running bat file through my application? Can anyone pls tell me? I am kind of new to java, and I am learning lot of stuff from this forum .
Would u pls suggest me about how to eleminate this DOS popup when I press execute button.
Regrds

Trying to run external script using Runtime.exec

Hey,
I am trying to use Runtime.exec(cmd, evnp, dir) to execute a fortran program and get back its output, however it seems to always be hanging. Here is my code snippet :
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            InputStream stream = new InputStream(process.getInputStream());
            InputStream error = new InputStreamr(process.getErrorStream());
            BufferedReader stdoutReader = new BufferedReader(new InputStreamReader(stream));
            BufferedReader erroutReader = new BufferedReader(new InputStreamReader(error));
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            System.out.println(error.available());     //returns 0
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                if (line1 == null) {
                    break;
                System.out.println(line1);
                System.out.println(line2);
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Okay, so I implemented the changes from that website (thanks by the way for that link, it helps me understand this a little better). However, my problem is still occuring. Here is my new code:
            class StreamThread extends Thread {
            InputStream is;
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            StreamThread(InputStream is, String type)
                this.is = is;
                this.type = type;
            public void run()
                try
                    InputStreamReader isr = new InputStreamReader(is); //never gets called
                    BufferedReader br = new BufferedReader(isr);
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                    while ( (line = br.readLine()) != null)
                        System.out.println(type +">"+ line);
                    } catch (IOException ioe)
                        ioe.printStackTrace();
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            int exitVal = process.waitFor(); //hangs here
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How do I copy a file to a remote server using runtime exec - plz Help!

Hi,
I am trying to copy a file to a remote server using a runtime exec command as follows:
Runtime.getRuntime().exec("scp "+getProperty(ListNewHandsetDetailsConstant.PROP_OUTPUT_PATH_JAR)+getProperty(ListNewHandsetDetailsConstant.PROP_OUTPUT_JAR_NAME)+".jar "+" "+getProperty(ListNewHandsetDetailsConstant.PROP_OUTPUT_PATH_TWO_USERNAME)+"@"+getProperty(ListNewHandsetDetailsConstant.PROP_OUTPUT_PATH_TWO_URL)+":"+getProperty(ListNewHandsetDetailsConstant.PROP_OUTPUT_PATH_TWO_JAR));
Problem is this statement does not execute, as when I try it directly on command line, it requests for a password. Any suggestions on how I can get rid of that? I think I might have to configure my ssh_config file, but when I did some "Googling", I found the configuration settings of a ssh2_config file. I tried those (changing it to Host-based Authentication), but it didn't recognise them. Please help, this is so urgent!
Regards,
Simz

Don't use Runtime.exec (or ProcessBuilder) for this. Check out JSch at JCraft (or some other Java SSH API.

How to capture output of java files using Runtime.exec

Hi guys,
I'm trying to capture output of java files using Runtime.exec but I don't know how. I keep receiving error message "java.lang.NoClassDefFoundError:" but I don't know how to :(
import java.io.*;
public class CmdExec {
public CmdExec() {
public static void main(String argv[]){
     try {
     String line;
     Runtime rt = Runtime.getRuntime();
     String[] cmd = new String[2];
     cmd[0] = "javac";
     cmd[1] = "I:\\My Documents\\My file\\CSM\\CSM00\\SmartQ\\src\\E.java";
     Process proc = rt.exec(cmd);
     cmd = new String[2];
     cmd[0] = "javac";
     cmd[1] = "I:\\My Documents\\My file\\CSM\\CSM00\\SmartQ\\src\\E";
     proc = rt.exec(cmd);
     //BufferedReader input = new BufferedReader(new InputStreamReader(p.getInputStream()));
     BufferedReader input = new BufferedReader(new InputStreamReader(proc.getErrorStream()));
     while ((line = input.readLine()) != null) {
        System.out.println(line);
     input.close();
    catch (Exception err) {
     err.printStackTrace();
public class E {
    public static void main(String[] args) {
        System.out.println("hello world!!!!");
}Please help :)

Javapedia: Classpath
How Classes are Found
Setting the class path (Windows)
Setting the class path (Solaris/Linux)
Understanding the Java ClassLoader
java -cp .;<any other directories or jars> YourClassNameYou get a NoClassDefFoundError message because the JVM (Java Virtual Machine) can't find your class. The way to remedy this is to ensure that your class is included in the classpath. The example assumes that you are in the same directory as the class you're trying to run.
javac -classpath .;<any additional jar files or directories> YourClassName.javaYou get a "cannot resolve symbol" message because the compiler can't find your class. The way to remedy this is to ensure that your class is included in the classpath. The example assumes that you are in the same directory as the class you're trying to run.

Using runtime.exec to zip some files

Hi,
I am using runtime.exec to try to automatically zip a bunch of files on a server. However, it does not seem to be working.
Before I execute the command, I save the zip command in a string. I then print the string to a log file, and then execute the runtime zip command. But nothing happens.
Yet, when I copy the string from the log, and paste it in a terminal, it properly creates the zip files. So, I know I have the correct command string, it just does not seem to be working within the java application. Also, the command string uses fully qualified directories, so it is not a directory issue.
I am using ubuntu linux.
Any ideas?
-Adam

adamSpline wrote:
Hi,
I am using runtime.exec to try to automatically zip a bunch of files on a server. However, it does not seem to be working.
Before I execute the command, I save the zip command in a string. I then print the string to a log file, and then execute the runtime zip command. But nothing happens. Within Runtime.exec() any command does not run in a shell and I bet you use wild cards and/or other commands to be interpreted by a shell which will not be interpreted since there is no shell. And, since you don't mention error messages or the return code, I will also bet you don't process the Process stdout , stderr and the return code properly.
It looks to me like you have fallen for at least two for the traps in [http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html|http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html].
>
Yet, when I copy the string from the log, and paste it in a terminal, it properly creates the zip files. So, I know I have the correct command string, it just does not seem to be working within the java application. Also, the command string uses fully qualified directories, so it is not a directory issue.
I am using ubuntu linux.
Any ideas?I agree with 'masijade' - use the built in Java classes.
>
-Adam

Issue using Runtime.exec() in Vista

I've coded a simple method using Runtime.exec() to get the client MAC ID , and it worked alright on XP. Now my client want to switch to vista , and the method is not working. Here's my code
import java.io.*;
import java.util.regex.*;
public class GetMac
     public static String getMacAddress()
          String mac="";
          System.out.println("getMacAddress");
          try {
               RunTimeExecutor re=new RunTimeExecutor("ipconfig /all");
                mac=re.executeAndReturnMac();
                re.destroy();
          } catch (Exception e) {
               e.printStackTrace();
          return mac;
import java.io.IOException;
import java.io.InputStream;
* @author amal
public class RunTimeExecutor
          String cmd;
          Process proc;
           * @param cmd
          public RunTimeExecutor(String cmd)
                    this.cmd=cmd;
           * @return boolean
           * @throws WIException
          public String executeAndReturnMac() throws Exception
               System.out.println("run");
               String mac="";
                    if(cmd==null)
                              throw new Exception("No Commands");
                    try
                          final Runtime rt = Runtime.getRuntime();
                          proc = rt.exec(cmd);
                          final StreamGobbler errorGobbler = new StreamGobbler(proc.getErrorStream());
                          InputStream iis=proc.getInputStream();
                          final StreamGobbler outputGobbler = new StreamGobbler(iis);
                          errorGobbler.start();
                          outputGobbler.start();
                          int exit=proc.waitFor();
                          System.out.println("exitVAl "+exit);
                          if(exit==0)
                               mac=outputGobbler.MAC;
                          return (exit==0) ? mac :null;
                catch (IOException e)
                          e.printStackTrace();
                catch (InterruptedException e)
                          e.printStackTrace();
                catch(Exception e)
                     e.printStackTrace();
                return null;
          public void destroy()
                    if(proc!=null )
                              proc.destroy();
* @author amal
import java.io.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
* @author amal
public class StreamGobbler extends Thread
    InputStream is;
    OutputStream os;
    public String MAC;
    StreamGobbler(InputStream is)
        this(is,null);
    StreamGobbler(InputStream is,OutputStream redirectTo)
        this.is = is;
        this.os = redirectTo;
     * @see java.lang.Thread#run()
    public void run()
        try
            PrintWriter pw = null;
            if (os != null)
                pw = new PrintWriter(os);
            InputStreamReader isr = new InputStreamReader(is);
            int c=0;
            BufferedReader br = new BufferedReader(isr);
            String line=null;
System.out.println("Start Reading");
                 while ( (line = br.readLine()) != null)
                      System.out.println(line);
                     if (pw != null)
                         pw.println(line);
                     Pattern p = Pattern.compile(".*Physical Address.*: (.*)");
                        Matcher m = p.matcher(line);
                        if (m.matches())
                             MAC = m.group(1);
                             System.out.println("seting MAC to "+MAC);
                             break;
            if (pw != null)
                pw.flush();
        } catch (Exception e)
            e.printStackTrace();
}The inputStream of the process doesnt get printed at all , the loop condition in StreamGobbler 'while ( (line = br.readLine()) != null)
' is never true.
Also , in random cases i've seen the System.out.println("exitVAl "+exit); line executing before the System.out.println("Start Reading"); line , and i though proc.waitFor() would guarentee otherwise.

thx guys for ur replies . The issue was because of some browser security system ( or so they said . ).However i'm still puzzled about the 'waiting for the stream to finish' part .
paul.miner wrote:
{I think the process is allowed to end with output still in the >>buffers, ..so this would be expected. You should be waiting for >>your .streams to finish, since that's what you really >>care .about. .Also, .you need to add synchronization between your >>threads so you can accurately retrieve "MAC". Also, do not break out >>of the loop when you find what you're looking for, you should >>continue .reading until the end of the stream.Wasn't I suppose to be reading out of the stream to prevent an overflow?Also the break is done there are multiple lines like 'Physical address .....: xxxxxxxxxx ' in the output , and the macid is the first one.About the ProcessBuilder , I'll look into it . Thx for your advice.

How to invoke the command interpreter to run the "NS.exe" using Runtime?

hi,everyone
I need to invoke the command interpreter,and enter the disk directory "c:/ns2/bin/",then run the "ns myfilename" command.My program is followed:
try{
String s[]=new String[4];
s[0]="cmd.exe";
s[1]="/c";
s[2]="cd c:/ns2/bin";
s[3]="ns.exe c:/ns2/bin/100n-500k-5.tcl";
Runtime R=Runtime.getRuntime();
Process p=R.exec(s);
int exitVal = p.waitFor();
System.out.println("Process exitValue: " + exitVal);
But this doesn't work!
please help me! thanks!

hi,everyone
I need to invoke the command interpreter,and
and enter the disk directory "c:/ns2/bin/",then run
the "ns myfilename" command.My program is followed:
try{
String s[]=new String[4];
s[0]="cmd.exe";
s[1]="/c";
s[2]="cd c:/ns2/bin";
s[3]="ns.exe c:/ns2/bin/100n-500k-5.tcl";
Runtime R=Runtime.getRuntime();
Process p=R.exec(s);
int exitVal = p.waitFor();
System.out.println("Process exitValue: " +
alue: " + exitVal);
But this doesn't work!
please help me! thanks!CDing will not change the directory.
should write:
String cmd= "cmd /c c:\\ns2\\bin\\ns.exe c\\ns2\\bin\\100n-500k-5.tcl"
for further details on how to use Runtime.exec(), see http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html

IOException File not found - While using Runtime.exec

Hey All,
I have written a Java application which needs to start up another external application. I have executables for that external application for different platforms (Win32, PPC and Linux). When the Java application is started it detects the OS and starts up the right executable according to the OS. The executable loads up fine on Windows without any problems. But in both Linux and Max OS X I get this exception:
java.io.IOException: java.io.IOException: "/home/vilas/Documents/Project/build/CLISP/linux/lisp.run": not found
        at java.lang.UNIXProcess.<init>(UNIXProcess.java:143)
        at java.lang.Runtime.execInternal(Native Method)
        at java.lang.Runtime.exec(Runtime.java:566)
        at java.lang.Runtime.exec(Runtime.java:428)
        at jplan.communication.lispserver.LispServer.startupServer(LispServer.java:143)
        at jplan.communication.lispserver.LispServer.run(LispServer.java:109)
        at java.lang.Thread.run(Thread.java:534)lisp.run has all the necessary permissions. If I copy the string (/home/vilas/Documents/Project/build/CLISP/linux/lisp.run) and paste it in a terminal and press enter, the application starts up fine without any problems!! Can you please tell me what could be going wrong?
The following extra information maybe helpfull:
1) I use the exec(String command, String[] envp, File dir) version of exec.
2) The complete format of the command is as follows (one long string):
"/home/vilas/Documents/Project/build/CLISP/linux/lisp.run" -B "/home/vilas/Documents/Project/build/CLISP/linux" -M "/home/vilas/Documents/Project/build/CLISP/linux/lispinit.mem" -i loader.lisp
Thanks in advance for your time and efforts.

I found the problem after extensively searing the forums (looking upto page 4 !! of the results). The problem was that I was using quotes to surround the paths in the command. If you copy and paste it in a terminal it will work fine but it does not work with runtime.exec. I am not sure, but I think the reason is that when a terminal is used, some pre-processing of the commands take place before they are passed onto the OS(shell). But while using runtime.exec, that pre-processing is not peformed and therefore some things will not work.
In order to fix the problem, I use quotes only when the OS is windows. In other cases(OS X, Linux) I escape the spaces i.e. replace " " with "\ ".
PS: The executable is a binary compiled from C code.

Why couldn't I use Runtime.exec(cmd)?

I try to use Runtime.exec(cmd) but I can't do it. Could you give me a sample that use Runtime.exe(cmd).
Please help me!

import java.io.*;
class RuntimeExec{
     private static boolean quit;
     public static void main(String[]args)throws IOException{
          if(args.length<1){
               System.out.println("Type in program to run");
               System.exit(1);
          quit = false;
          Runtime run = Runtime.getRuntime();
          Process newProcess = run.exec(args[0]);
          if(newProcess!=null){
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               PrintWriter os = new PrintWriter(newProcess.getOutputStream());
               BufferedReader be = new BufferedReader(new InputStreamReader(newProcess.getErrorStream()));
               if(br!=null)(new ReadThread(br)).start();
               if(os!=null)(new WriteThread(os)).start();
               if(be!=null)(new ErrorThread(be)).start();
               try{
                    newProcess.waitFor();
                    newProcess.destroy();
                    quit = true;
               }catch(InterruptedException ie){}
          }else
               System.out.println("Error creating process");
          System.out.println("Done!");
          System.exit(0);
     private static class ReadThread extends Thread{
          private BufferedReader is;
          public ReadThread(BufferedReader is){
               this.is = is;
          public void run(){
               String s;
               while(!quit){
                    try{
                         s=is.readLine();
                         if(s!=null)
                         System.out.println(s);
                    }catch(IOException e){}
     private static class WriteThread extends Thread{
          private PrintWriter br;
          private BufferedReader ss;
          public WriteThread(PrintWriter br){
               this.br = br;
               ss = new BufferedReader(new InputStreamReader(System.in));
          public void run(){
               String s;
               while(!quit){
                    try{
                         s=ss.readLine();
                         if(s!=null)
                         br.println(s);
                    }catch(IOException e){}
     private static class ErrorThread extends Thread{
          private BufferedReader br;
          public ErrorThread(BufferedReader br){
               this.br = br;
          public void run(){
               while(!quit){
                    String s;
                    try{
                         s=br.readLine();
                         if(s!=null)
                         System.err.println(s);
                    }catch(IOException e){}
Sorry about that stupid code, here is code that works... with deadlocks maybe??

Problem of executing a process under Linux using Runtime.exec

Hi, All
I am having a problem of executing a process under Linux and looking for help.
I have a simple C program, which just opens a listening port, accept connection request and receive data. What I did is:
1. I create a script to start this C program
2. I write a simple java application using Runtime.exec to execute this script
I can see this C program is started, and it is doing what it supposed to do, opening a listening port, accepting connection request from client and receiving data from client. But if I stop the Java application, then this C program will die when any incoming data or connection request happens. There is nothing wrong with the C program and the script, because if I manually execute this script, everying works fine.
I am using jre1.4.2_07 and running under Linux fedora 3.0.
Then I tried similar thing under Windows XP with service pack2, evrything works OK, the C program doesn't die at all.

Mind reading is not an exact science but I bet that you are not processing either the process stdout or the stderr stream properly. Have you read http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html ?

Running ssh in xterm using Runtime.exec !! URGENT

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