Need help on changing directories with Runtime.getRuntime().exec() (shell)

I want to create a perfect remote shell with Runtime.getRuntime(). I just can't get it to change directories. I want that if the remote user type "cd.." he changes the directory. At the moment, I can't get anything else than the "user.dir" directory.
Is there anyway to send additionnal commands to cmd.exe after the Runtime.getRuntime().exec(). Because at the moment I'm running these commands:
cmd[0] = "cmd.exe" ;
cmd[1] = "/C" ;
cmd[2] = commandString;
After that I just wanna do stuff as if I really was at the computer and had a cmd.exe window open. I tried the output stream, I tried placing "&&" in front of the commandString(worked when I did it in cmd window), tried doing multiple Runtime.getRuntime().exec(). Starting to pull my hair out here.

Because essentially I want this to be a remote shell.
So I need it to accepts commands such as cd to change
around the directory so the person can navigate the
computer.
I just managed to be able to do it in one command
line. For example I would send "cd c:\downloads dir"
to the server and it would work but I would really
like to keep track of the working directory so the
user wouldn't always have to change the directory.Then you don't Runtime.exec() once for each command the user types. You Runtime.exec() a shell once, and pass what the user types and the shell's responses via the in/out streams available from the Process class.

Similar Messages

Need help with Runtime.getRuntime().exec

If there is a better place to post please let me know. I need some help understanding what is going on and was hoping someone might be able to provide some information. I would like to use Runtime.getRuntime().exec to copy a file in linux. Here is the code I am using:
try {
Process p = Runtime.getRuntime().exec("cp -v foo foo2");
BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream()));
String line = null;
while ((line = in.readLine()) != null) {
System.out.println(line);
} catch (IOException e) {
e.printStackTrace();
If I use cp, with the System.out.println(line) I can see that it has copied and of course when I check the command line indeed it has. My problem is that I really need to use the dd command, but I can't see the output that dd displays. It copies the file just fine but I need the output. If someone can provide some explaination or help I would really appreciate it. Thanks.

By default, dd sends its output to stdout, so any status messages it has go to stderr. Use getErrorStream (double check the docs for the method name) just like you're currently using getInputSTream.

Problems with Runtime.getRuntime().exec in Windows 2000

Hello,
I have a batch file that I want to run from my java application. My code is the following:
try {
Runtime.getRuntime().exec("cmd.exe /c C:\\temp\\shortcut.bat");
} catch (Exception e) {
System.out.println(e.getMessage());
}I was developing on windows XP and it worked just fine. But then I tested it on windows 2000 and it didn't work. The batch file is okay, because if I run the batch file myself it works just fine, even from the command line. I get no errors what so ever, it just doesn't do anything...
Can somebody help me with this?
thx in advance

thank you all so much
I figured it out... It was a combination of two things that went wrong.
First one: in my batch file I had:
cd C:\tempwhich worsk fine in XP, but in it doesn't in 2000. In 2000 it has to be:
C:
cd \temp But just changing that wasn't enough, I also needed the "start"
Now it works just fine on 2000, hopefully it'll still work on xp as well.
THX!

Problem with Runtime.getRuntime().exec

Hi ,
i'm using jBuilderX and windows 2000 server . My problem is that i can't
find why
in my code it doesn't work this:
import java.lang.*;
String command = new String("c:\\testd\\testf.bat"); // testf.bat -
batch file
Runtime.getRuntime().exec(command); // it doesn't
have any effect
Thanks in advance,

What's it supposed to do?
I can definitely help you on this 1, but I'd really like to see your streamoutputs. You can get these from the Process object that is created, but you'll need to add some threaded listeners to get the data.
Is this possible?

Weird behaviour with Runtime.getRuntime.exec() attempting to start IE

I have developed a sample scheduler that it a web page the user fill in and then create a process schedule by the Timer class. The process starts IE in order to automate data entry normally done by a user. The Java code run well but IE when start from the p = Runtime.getRuntime().exec() class freeze. Is anyone can tell if IE require special setting to run in background?
Here the Java code but once again it work well but IE freeze and cause the forked process to hang.
// The schedule task
public void scheduleTask(Object o) throws ApplicationException {
ScheduleBean sb = (ScheduleBean)o;
try {
Timer timer = new Timer(true);
RunReslotting rr = new RunReslotting();
timer.schedule(rr, sb.getSchedulingDate());
catch(IllegalArgumentException iae) {
throw new ApplicationException(iae.getMessage());
catch(IllegalStateException ise) {
throw new ApplicationException(ise.getMessage());
public class RunReslotting extends TimerTask {
protected RunReslotting() {
public void run() {
String[] cmdLineParam = transportProfile(2);
cmdLineParam[0] = "location=" + wr.getLocation();
cmdLineParam[1] = "loc_class=" + wr.getNewStrategy();
forkProcess("runie.bat", cmdLineParam);
private String[] transportProfile(int startAt) {
envProf = System.getenv();
profCmd = new String[envProf.size() + startAt];
itr = envProf.entrySet().iterator();
int i = startAt;
while (itr.hasNext()) {
entry = (Map.Entry)itr.next();
profCmd[i] = (String)entry.getKey() + "=" + (String)entry.getValue();
i++;
return profCmd;
private void forkProcess(String processName, String[] osParam) throws ApplicationException {
// Lance un nouveau process
p = null;
int i=0;
try {
p = Runtime.getRuntime().exec(processName, osParam);
// Vide les buffers du process pour eviter de geler
mcError = new MessageCatcher(p.getErrorStream());
mcOutput = new MessageCatcher(p.getInputStream());
mcError.start();
mcOutput.start();
i = p.waitFor();
if ( (i != 0) || (mcError.getMessage() != null) || (mcOutput.getMessage() != null) ) {
System.err.println("*** Process failed RC:" + i + " *** ");
if (mcOutput.getMessage() != null) {
System.err.println("Output messages: " + mcOutput.getMessage());
if (mcError.getMessage() != null) {
System.err.println("Error messages: " + mcError.getMessage());
throw new ApplicationException("*** Process failed *** ");
catch(IOException ioe) {
throw new ApplicationException(ioe.getMessage());
catch(InterruptedException ie) {
throw new ApplicationException(ie.getMessage());
Any suggestion will be appreciate. I�m working on that scheduler for a while and i'm desperate
Thanks
Francis

This starts IE for me, no problem
String[] cmd = {"C:\\Program Files\\Internet Explorer\\iexplore.exe"};
Runtime.getRuntime().exec(cmd);

Need to run two commands in Runtime.getRuntime.exec()???

I need to run two commands in the same shell , in the same exec function... is this possible? I tried to invoke
ksh -e ... command1;command2
but that did nothing

I need to run two commands in the same shell , in the
same exec function... is this possible? I tried to
invoke
ksh -e ... command1;command2
but that did nothingI'm not all that familiar with that particular shell (ksh), but if it works from the command-line, I'd venture to guess that it would have worked there as well. My guess is it did "work" (executed the 2 commands) but that you may have misdiagnosed the real problem (current working directory assumption incorrect, etc).

Kill "runtime.getruntime().exec"-generated processes with control-c?

Hi there,
In my java program I create 2 processes with "runtime.getruntime().exec", but when I stop my java program pressing control-c these 2 processes remains running and I have to kill them using linux command "kill".
How can I program my code in order to kill these 2 processes when stopping my java program with control-c?
I tried next but it didn't work for me:
try {
final Process proc = Runtime.getRuntime().exec ( "java ControlCProblemDemo" );
Runtime.getRuntime().addShutdownHook(
new Thread(){
public void run(){
proc.destroy();
while ( true );
} catch( IOException ioe ) {
System.err.println( ioe );
}Thank you very much in advance.
Josué

so are you saying proc.destroy() does nothing?
are you sure it's getting executed?
is there an error?
too little info here

Syntax of Runtime.getRuntime().exec()

i hava batch file command (genXML) in directory C:\update ,this command syntax is: genXML sourceFile resultFile outputDirectory
how can I run the command with Runtime.getRuntime().exec() ?
Thanks

i hava batch file command (genXML) in directory
C:\update ,this command syntax is: genXML sourceFile
resultFile outputDirectory
how can I run the command with
Runtime.getRuntime().exec() ?
Thanksuse the
public Process exec(String[] cmdarray)
version of exec as follows:
where genProg is the path and name of your genXML program
ie. genProg = "C:\\update\\genXML.exe"
String[] cmd = {genProg, source, results, outputDir};

Problems with Runtime.getRuntime().exe and getting output. Please Help me!!

I'm creating a program that runs the followings programs written in C and compiled with gcc:
==========================The first C program====================================
#include<stdio.h>
void leia();
main()
int x = 20;
int y = 2;
printf( "Marcinho e Danny\n" );
printf( "Te\n" );
printf( "Vida\n" );
printf( "Marciorja: %d.\n", x * y );
===============================================================================
==========================The second C program====================================
#include<stdio.h>
void leia();
main()
int x = 20;
int y = 2;
printf( "Marcinho e Danny\n" );
printf( "Te\n" );
printf( "Vida\n" );
printf( "Marciorja: %d.\n", x * y );
scanf( "%d", &x ); //This is the statement added to the latter C program.
===============================================================================
I compiled this C program and generates the a.exe program. I have the following Java program:
==================================================================================
import java.awt.Color;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.DataOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.util.StringTokenizer;
import javax.swing.JFrame;
import javax.swing.text.BadLocationException;
import javax.swing.text.EditorKit;
import javax.swing.text.MutableAttributeSet;
import javax.swing.text.Style;
import javax.swing.text.StyledDocument;
import javax.swing.text.StyledEditorKit;
public class Teste
private BufferedWriter out;
private BufferedReader in;
private Style stylePrompt;
private LeitorDeEntrada le;
private String entrada = "";
private AreaDeEdicao areaDeTexto;
Process p = null;
public Teste( AreaDeEdicao areaDeTexto )
this.areaDeTexto = areaDeTexto;
public void runCommand( String command ) throws IOException
StringTokenizer strTokenizer = new StringTokenizer( command );
String mainCommand = null;
String argument = null;
StyledDocument doc = areaDeTexto.getStyledDocument( );
String[] prefix = new String[] { "cmd.exe", "/c", command };
p = Runtime.getRuntime().exec( prefix, null, new File( System.getProperty( "user.dir" ) ) );
in = new BufferedReader( new InputStreamReader( p.getInputStream( ) ) );
out = new BufferedWriter( new OutputStreamWriter( p.getOutputStream( ) ) );
out.flush();
Thread t = new Thread( )
public void run( )
super.setName( "Marcio" );
execute( );
public void execute( )
String c = null;
try
if( !in.ready( ) )
try
this.sleep( 1000 );
catch( InterruptedException e2 )
e2.printStackTrace( );
System.out.println( "in.rea: " + in.ready( ) );
c = in.readLine( );
catch( IOException e )
e.printStackTrace( );
String str = "";
while( c != null )
str = c + "\n";
try
areaDeTexto.getDocument( ).insertString( areaDeTexto.getDocument( )
.getLength( ),
str, null );
catch( BadLocationException e3 )
e3.printStackTrace( );
try
c = in.readLine( );
catch( IOException e2 )
e2.printStackTrace( );
areaDeTexto.setCaretPosition( areaDeTexto.getDocument( )
.getLength( ) );
try
in.close( );
catch( IOException e1 )
e1.printStackTrace( );
t.setDaemon( true );
t.start( );
le = new LeitorDeEntrada( );
areaDeTexto.addKeyListener( le );
public static void main( String[] args )
JFrame janela = new JFrame( );
AreaDeEdicao areaDeTexto = new AreaDeEdicao( new MyDocument( ) );
areaDeTexto.setBackground( Color.black );
areaDeTexto.setForeground( Color.GREEN );
janela.getContentPane( ).add( areaDeTexto );
Teste teste = new Teste( areaDeTexto );
try
teste.runCommand( "a.exe" );
catch( IOException e )
e.printStackTrace( );
janela.setSize( 500, 300 );
janela.setVisible( true );
class LeitorDeEntrada extends KeyAdapter
public void keyPressed( KeyEvent e )
char c = e.getKeyChar( );
System.out.println( "keyPressed" );
try
if( c == '\n' )
areaDeTexto.getDocument().insertString( areaDeTexto.getDocument( )
.getLength( ),
c + "", null );
out.write( c + "" );
out.flush();
catch( BadLocationException e2 )
e2.printStackTrace( );
} catch (IOException e2) {
e2.printStackTrace();
==================================================================================
This Java program is very simple. It runs the a.exe using the method Runtime.getRuntime().exec and gets input for a.exe from a JTextPane and shows the output in the same JTextPane.
If my a.exe represents the binary code of the first C program the text in the JTextPane is the correct output of the a.exe. But, if my a.exe represents the binary code of the second C program, the JTextPane shows the messages ( "Marcinho e Danny\n", "Te\n", "Vida\n", "Marciorja: %d.\n") after I enter the value claimed by the scanf.
I tested my Java program running programs that require input and all have the same behavior:.
What can I need to do to solve this bug?
I read other posts with the same problem and nobody answers what is the problem.
I'LL pay 10 Duke dollars to the first that answers me.

The second C program with the statement fflush( stdout ) produces the right output.
#include<stdio.h>
void leia();
main()
int x = 20;
int y = 2;
printf( "Marcinho e Danny\n" );
printf( "Te\n" );
printf( "Vida\n" );
fflush( stdout ); //added statement.
printf( "Marciorja: %d.\n", x * y );
scanf( "%d", &x ); //This is the statement added to the latter C program.
but what can I do to run C programs that doesn't flush the stdout?

Pls help me about Runtime.getRuntime().exec("java...")

I have two applications. One is Client, the other is Platform.
In the Platform, there are source files packaged into a library named ZtConfig.jar used by Client. If run Client and Platform, two applications can execute normally.
But if Client is started by user from platform, there is something wrong.
I noticed the error difficultly with finally catching exception.
I was puzzled. It is so strange. Pls help me. I list some codes here.
In Client where finally exception catched:
import zt.config;
        try {
          xmlFileUrl = new java.net.URL(
              "file:///e:/Client/src/config/nsr1000.xml");
        catch (IOException ex1) {
          FileLogger.error(ex1.getMessage());
        FileLogger.info("NSR1000Document.setIEDContent", xmlFileUrl.toString());
        try {
          xmlLoader = new XMLConfigLoader(xmlFileUrl);
        finally {
          FileLogger.error("NSR1000Document.setIEDContent",
                           "cannot new XMLConfigLoader object");
          return; // the following codes cannot execute, so have to return here.
In the XMLConfigLoader, the constructor is
public XMLConfigLoader(java.net.URL xmlFileUrl) {
    this.xmlFileUrl = xmlFileUrl;
    configDoc = null;
    builder = null;
    xmlDoc = null;
Platform start Client application using the following code
Runtime.getRuntime().exec(
                "java -jar e:/Client/Client.jar");

I've got it!
Briefly, it is because classpath setting was overwritten by JBuilder.
Firstly, I start Platform from JBuilder. In its messages window. The command is
d:\j2sdk1.4.2_06\bin\javaw -classpath "JBPATH" zt.client.nsr1000.NSR1000App
Now, classpath environment variable was changed to be JBPATH. While I start
Client use Runtime.getRuntime().exec("java -jar Client.jar"), it will not run for classpath changed.
Then, I configured all packages used by Client into JBuilder libraries, including
Client.jar. And changed codes Runtime.getRuntime().exec("java -jar Client.jar") to be Runtime.getRuntime().exec("java -Xmx128m zt.client.nsr1000.NSR1000App")
I also changed CLASSPATH windows system environment variable.
I found this from command console, it can display exceptions. But from JBuilder, there is no exception that can be captured. So debug is difficult.

Need help in changing the langauge on the Nokia570...

Anybody can help please. I was given a brand new Nokia 5700 by my nephew from Taiwan and the langauge set is Chinese. I do not read or write chinese. Need help to change thelangauge on the phone. Any body can help.
Thanks in advance

Friend, I am based in China and my secretary is chinese - but nobody can figure out how to do it. I have another engineer who has the same phone has been playing around with it for 2 days and cannot get it done also. That is the reason I am getting on this site for help.
Thanks anyways

Using Runtime.getRuntime().exec(DOS Program) with Windows 2000.

I am trying to spawn a DOS Program from within Java.
On Win95/98/ME, I use
Process     p = Runtime.getRuntime().exec("START /w command.com con /c myDOSProgram.exe");
This works on these platforms. On Win 2000, I use
Process     p = Runtime.getRuntime().exec("START /w cmd.exe con /c myDOSProgram.exe");
It does not work at all.
I have tried all combinations of using START, cmd.exe, con /c, etc.
I can spawn a Windows App using
Process     p = Runtime.getRuntime().exec("windows.exe");
And it works fine.
What does it take to spawn a DOS program from Java on the Windows 2000 op sys?

Hi. I recently wrote a java GUI that calls a DOS program with mixed success. Here's the code I used to make the call:String osName = System.getProperty("os.name" );
String[] cmd = new String[4];
if( osName.equals( "Windows 2000" ) || osName.equals( "Windows NT" ) )
     cmd[0] = "cmd.exe";
     cmd[1] = "/C" ;
     cmd[2] = "VBDoc.exe";
     cmd[3] = fileName;
else if( osName.equals( "Windows 95" ) || osName.equals( "Windows 98" ) )
     cmd[0] = "command.com" ;
     cmd[1] = "/C" ;
     cmd[2] = "VBDoc.exe";
     cmd[3] = fileName;
else
     System.out.println(osName);
Process proc = runtime.exec(cmd);Check out this article, it gives a good explanation of how to use the exec() call:
http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html
Hope this helps!

Need help on struts configuration with ColdFusion 10 using IIS

We need help on struts configuration with ColdFusion 10 using IIS.
Earlier we were using ColdFusion 8 with IIS 6 for one of our application. This application internally calls struts. After upgrading to ColdFusion 10 struts calls are not loading. We get 404 error.
In ColdFusion 8 struts were configured using actions extension .do in IIS from this file-
C:\ColdFusion8\runtime\lib\wsconfig\jrun_iis6.dll.
But in ColdFusion 10 this file is not present as ColdFusion 10 uses Tomcat in place of Jrun.
Also there is no information in ColdFusion log file.

Duane wrote:
doctormirabilis, Welcome to the discussion area!
1) how can i configure the time capsule in order to operate as a remote base station synchronizing with the relay using the ethernet port?
Configure the Time Capsule to act as a bridge (not distributing IP addresses). Also configure the Time Capsule to create an 802.11n wireless network with a unique network name (SSID). That's it.
2) how can i avoid that my powerbook while accessing my wireless network does connect through the relay station instead of using the time capsule?
Configure the Time Capsule to use a different network name than the WDS link between the 2 AirPort Express (AX). Configure the PowerBook to use the Time Capsule network.
There are 2 pieces of information that you should be aware of...
(1) None of the PowerBooks are capable of 802.11n.
(2) The WDS link cuts your available bandwidth in half. So the wireless link to your neighbor's has a maximum potential of 27 Mbps.
Let's for a minute assume that you have a Mac compatible with 802.11n. In your configuration the time you could take advantage of the 802.11n speed is when the Mac is sending/recieving data directly from/to the Time Capsule.
There would be NO speed increase in Internet access. The speed of Internet access is going to be controlled by the slowest link in the path to the Internet. That is probably the connection to the ISP. The next slowest path is the WDS link to your neighbor's.
Duane,
I am in a similar situation, sharing internet with my neighbor. Do you think it would be plausible to hook up a vonage phone adapter to time capsule's ethernet port if time capsule is bridging from my neighbor's router in the configuration you have described? A check of my upload speed shows 1.67Mbps (powerbookG4 w/ airport extreme). Vonage reccommends 90kbps minimum upload speed. Am I going to lose some speed putting the Vonag adapter behind time capsule?
Thank you

Runtime.getRuntime().exec problem with linux script.

Hello,
I try to start a script under Linux RedHat 9. This script must just create another file.
I work with JDK 1.4.1_02b06.
If I use the next command
process = Runtime.getRuntime().exec("/temp/myScript.sh");
This is not working. I script file is existing otherwise I receive an error. I don't understand why the script is not executed!
I have check some other posts in this forum but I cannot find the solution.
Thanks in advance for your help.
Alain.

Try running it with sh: Runtime.getRuntime().exec("sh /temp/myScript.sh");

I got my mac from granddaughter.need help to change admin password

i just got my mac from granddaughter. i need help to change the admin password. she has no clue what i am talking about when i ask for the password. please help me. i can't even install my tiger replacement cd until i change the admin password. thanks for your help. lee

Hi, Lee. Welcome to Apple Support Communities.
From this Apple Knowledge Base article:
Start up from a Mac OS X Install disc (one whose version is closest to the version of Mac OS X installed). Usually, you can start from the disc by putting it in your computer, restarting, and holding the C key. Or, put it in the computer and click the Install or Restore icon you see in the disc's main window (after which the computer will start from the disc without you needing to hold C). Or, you can use Startup Manager or the Startup Disk preference pane to select the Install disc.
Choose a language, click the arrow button to continue,
Mac OS X v10.6 or later: Choose Password Reset from the Utilities menu.
Mac OS X v10.5 or v10.4: Choose Reset Password from the Utilities menu.
Mac OS X v10.3: Choose Reset Password from the Installer menu.
Tip: If you don't see this menu or menu choice, you're probably not started from the disc yet.
Note: The default keyboard layout is U.S. English while started from the installation disc. If you use a keyboard layout other than U.S English, use the Input menu (the flag icon on the right side of the menu bar) to select the desired layout before typing a new password.
Select your Mac OS X hard disk volume.
Select the user name of your original administrator account.
Important: Do not select "System Administrator (root)". This is actually the root user. You should not confuse it with a normal administrator account.

Need help on changing directories with Runtime.getRuntime().exec() (shell)

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