Linux shell commands through linux

i am trying to run shell comands through java.
so far i hav been success ful in running some of them. but when ever a '\' symbol is encountered it doesnt work.
i use
process p = Runtime.getRuntime().exec(command)
example
command= "mount -t smbfs //192.168.10.150/abcd /home/lan" works fine
but "mount -t smbfs //192.168.10.34/english\\ songs /home/lan"
does not work
is there a way to bypass writing a shell script and executing it?
i just want to execute it directly without writing it in a shell file first.

yes there are spaces in the path name thats why im using '\'. and yes in the string i do write it as '\\'. it displays the correct path name using println in the terminal but doesnt run using exec(). im aware of the temp.sh way and i know it works but im working on a networking project and want to avoid writing to a file again and again.
the other constructor of exec seems interesting. ill try it.

Similar Messages

Running a perl shell command through a java program on linux platform

i'm trying to execute the following command in a java program "perl xxx.pl" using the runtime.getruntime method
here is the piece of code
String[] cmd={"perl","-c","AraMorph.pl",""};
Process p = Runtime.getRuntime().exec(cmd,null,new File("/home/ahmed/buckwalter_morphan_1/data"));
p.waitFor();
BufferedReader in=new BufferedReader(new InputStreamReader(p.getInputStream()));
String line;
while ((line=in.readLine())!=null)
System.out.println(line);
but it doesn't output anything even if i tried to print the output to a file
i'm trying to execute this program on linux platform but its working properly on a windows platform
thx
raar

String[] cmd={"perl","AraMorph.pl"," </home/ahmed/in.txt"," >/home/ahmed/ast.txt"};
Process p = Runtime.getRuntime().exec(cmd,null,new File("/home/ahmed/buckwalter_morphan_1/data"));
BufferedReader in=new BufferedReader(new InputStreamReader(p.getErrorStream()));
String line;
while ((line=in.readLine())!=null)
System.out.println(line);
p.waitFor();
String str2=p.getInputStream().toString();
System.out.println("==================================="+str2);
and it still outputs nothing but goes in something like infinite loop or as assumed in the article u suggested a deadlock but even all solutions to all pitfalls didn't succeed

PROBLEM in executing a shell command through Runtime.getRuntime().exec()

Hi all,
I was trying to execute the following code:
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.Statement;
import java.sql.ResultSet;
* Created on Mar 13, 2007
* To change the template for this generated file go to
* Window>Preferences>Java>Code Generation>Code and Comments
* @author 195092
* To change the template for this generated type comment go to
* Window>Preferences>Java>Code Generation>Code and Comments
public class ClassReportDeleteDaemon {
     ClassReportDeleteDaemon()
     public static void main(String[] args) throws Exception
          Connection conn = null;
          Statement stmt = null;
          ResultSet rs;
          String strQuery = null;
          String strdaysback = null;
          String delstring = null;
          int daysback;
          try
               System.out.println("REPORT DELETION ::: FINDING DRIVER");
               Class.forName("oracle.jdbc.driver.OracleDriver");
          catch(Exception e)
               System.out.println("REPORT DELETION ::: DRIVER EXCEPTION--" + e.getMessage());
               System.out.println("REPORT DELETION ::: DRIVER NOT FOUND");
          try
               String strUrl = "jdbc:Oracle:thin:" + args[0] + "/" + args[1] + "@" + args[2];
               System.out.println("REPORT DELETION ::: TRYING FOR JDBC CONNECTION");
               conn = DriverManager.getConnection(strUrl);
               System.out.println("REPORT DELETION ::: SUCCESSFUL CONNECTION");
               while(true)
                    System.out.println("WHILE LOOP");
                    stmt = conn.createStatement();
                    strQuery = "SELECT REP_DAYS_OLD FROM T_REPORT_DEL";
                    rs = stmt.executeQuery(strQuery);
                    while(rs.next())
                         strdaysback = rs.getString("REP_DAYS_OLD");
                         //daysback = Integer.parseInt(strdaysback);
                    System.out.print("NO of Days===>" + strdaysback);
                    delstring = "find /tmp/reports1 -name " + "\"" + "*" + "\"" + " -mtime +" + strdaysback + " -print|xargs rm -r";
                    System.out.println("DELETE STRING===>" + delstring);
                    Process proc = Runtime.getRuntime().exec(delstring);
                    //Get error stream to display error messages encountered during execution of command
                    InputStream errStream=proc.getErrorStream();
                    //Get error stream to display output messages encountered during execution of command
                    InputStream inStream = proc.getInputStream();
                    InputStreamReader strReader = new InputStreamReader(errStream);
                    BufferedReader br = new BufferedReader(strReader);
                    String strLine = null;
                    while((strLine=br.readLine())!=null)
                         System.out.println(strLine);
               }     //end of while loop
          }     //end of try
          catch (Exception e)
               System.out.println("REPORT DELETION ::: EXCEPTION---" + e.getMessage());
               conn.close();
     }     //end of main
}     //end of ClassReportDeleteDaemon
But it is giving the error "BAD OPTION -print|xargs". The command run well in shell.
Please help.
Thanking u.......

Since the pipe '|' is interpreted by the shell then you need the shell to invoke your command
        String[] command = {"sh","-c","find /tmp/reports1 -name " + "\"" + "*" + "\"" + " -mtime +" + strdaysback + " -print|xargs rm -r"};
        final Process process = Runtime.getRuntime().exec(command);
You should also read http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html at least twice and implement the recommendation regarding stdout and stderr.
P.S. Why are you not using Java to find and delete these files?
Message was edited by:
sabre150

Executing the top command through Java in linux

I am trying to execute the top command in Java as
Runtime.getRuntime().exec("top -n 1 >a.log");
But the command is not working in linux only through java.When i run the same command through the prompt it is working fine.Also all other commands are working fine.Is there any issue with top in linux?

flounder wrote:
Try reading [this article|http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html]. If it does not answer your problem then try seaching for other similar articles.
The cited article does provide an answer to the problem since it explains how the shell meta character '>' must be interpretted by a shell. The code as presented does not invoke a shell.

Executing sudo linux commands through a JSP page.

Hi,
I need to execute some superuser commands through a JSP page under Linux.
I added users apache and tomcat to the /etc/sudoers file with no password prompting.
My JSP page works fine with any usual linux command, but when I call a sudo cmd I have a message (when reading the ErrorStream instead of the InputStream) that sudo cant be executed because it needs a tty even when I call the shell before the sudo command.
Here is a piece of my code (very basic):
String cmd="linux_cmd";
Process proc = Runtime.getRuntime().exec(cmd);
InputStream stdin = proc.getInputStream();
InputStreamReader isr = new InputStreamReader(stdin);
BufferedReader br = new BufferedReader(isr);
String line = null;
while ( (line = br.readLine()) != null)
out.println(line);
Is there any way I can make sudo calls from a JSP page ?
I know that making root calls from a web application is a bad thing, but for now security is not my concern.
Thank you for any tips.

JavaFan2 wrote:
In fact, I help supervising a student project who is supposed to write an admin application to offert graphical interfaces for some security and system tools under Linux (like fdisk, iptables etc) using J2EE, ... something like Webmin.
As I said, I know that is has a huge security risk but this app has the only purpose of learning J2EE, no security issues are treated.If you want to say "I will leave my office door open because there's no security risk in doing that" then that's a valid statement. But what you are trying to do here isn't the equivalent of leaving your office door open. It's the equivalent of finding a master key for all the offices in the world. And as such it is in fact a serious security risk which should not be circumvented.
And no, it's no good saying "But I'm only going to use this all-powerful master key to open my own office door". If you get the key then anybody else can get the key too.

Executing a linux command through flash lite

Hello All,
i want to know one thing.. : is it possible to execute a linux command through flash lite?
I mean, say, in linux at the command prompt if i want to change the date and time then i will execute command date 082110452009.00 to set
21 August 2009, 11:45:00 .. i want to do this through actionscript2.. first i wil provide a UI asking the user to set date, time, year.. once he clicks OK i want to execute the above command with the user input..
This is because currently i m running this application on an embedded linux device which doesn't have a real time clock.. i mean once i switch off and ON the device the date and time will set back to default value 01 Jan 1970 as it happens in linux..
any suggestions?

get the the inputStream of the runtime object after executing the command.
now use the readLine() function until it becomes null.
egs: with reference to ur code.
InputStream is=p.getInputStream()
while(is!=null)
String s=is.readLine();
if the command don't execute try giving the full path also like /sbin/ls -l

How to append linux shell command output to MariaDB?

That link gave me an idea, I can create an .sql template file with the "insert" query, dump the shell command output to a text file (>), then use "grep" and "sed" to append the desired parts of the command's output file to that .sql file and then execute the .sql file. What do you think?

I haven't done this myself, but it is probably something along the lines of the answer provided in this link:
http://stackoverflow.com/questions/3900496/using-shell-script-to-insert-data-into-remote-mysql-datab...

IS there an easy way to execute a shell command and capture its output...

From an application? I am thinking of using fork and then waiting for the PID to finish and write the output to a file which I then read, but this seems clunky. Also there are big warnings about frameworks getting hosed if you use fork, although the "Forked" process will exec the shell command and the one that gets the PID the original process might be 'safe' from this framework corruption. I am not certain of this, it is just a guess.
If there was something like a process class where I could specify the executable and parameters, and read from it's std out until the process completed, that would be better. Or even get a callback when the process exited and an asynchronous callback for each line of data it produced.

That was just in response to OrangeKay implied accusation that I was some kind of hard-core Microsoft programmer that sneered at apple programmers.
You may want to book mark this, I will go over a brief history which should clear a lot of things up, about me, and about what I am doing.
Lets turn the clock back to 1998: I graduate from a university with a BS in Computer science. I had been interning at a local defense contractor writing missile testing software. This was on a proprietary hardware and so there was no "Microsoft" involved. At this point I think Bill Gates = Satan. Microsoft = Kingdom of Evil.
I get a job as a video game programmer. I write code from the Playstation, then the Playstation 2 and Gamecube. I do this for several years and again I have zero interest / knowledge of the Microsoft world beyond it being the OS which I am forced to use to play my games on. I had fought this by trying to use OS Warp and other things, but eventually since I mainly had a PC for games I had to get a windows OS, the first being NT 3.51 and then Win98 cause NT4.0 didn't support past directx 3 and everyone was using directX 5 or 6 (I do not remember).
As video game companies go, they do not last. Everyone wants to write video games, anyone with some cash wants to start a company. 1 in 1000 will make it 5 years. Needless to say, as our company began to tank, I got laid off, along with my entire team. I have cash in the bank, no big deal, right?
Well the economy started to suck, video game developers were closing down like crazy so the market was saturated with x-video game developers. 2 Years go by, no job, and almost no money. Then I get a call from some guy who wants me to come for an interview about 75 miles away. It is in a place I do not want to go. So they interview me, and ask me a bunch of general programming questions.
I leave the place, and by the time I get home there is a message on my machine asking me if I would take the job at a ridiculously high salary (I live in an area where the cost of living is very low). Well I am about out of money and its a job offer with a huge salary, so I take it.
I get there and guess what? I get to work on this "agent" that runs on windows boxes. I have NO IDEA how to program on windows. Windows is evil, why would I want to taint myself with this vile Microsoft APIs? I really have no choice, I have to learn how to develop on windows. I get to use visual studio 6, which I do not understand because I used the Borland compilers (Borland != Microsoft).
Well I start to slug through it all and get familiar with MSDN and CodeProject and CodeGuru. As the years pass, I begining applicate the examples and detailed documentation that MSDN has. I have a start page on MSDN which covers every category of operation which will take you through a tree of choices and lead you to the exact area related API calls you will need to use to do whatever you want. Now I do not think MS = Evil anymore. I switch to DevStudio 2005 which is really nice. The debugging, IDE, and everything is great.
Now the other half of this application resides on a server. That server is a Linux box, and the server app is written in Java. My stuff is still C++.
One day, I get a request, and a eMac with 10.4 PPC to make a Mac version. Now I am at the point of Mac programming as I was with Windows when I started. I didn't know anything about it. I was looking for CodeWarrior cause I used that in the past, but alas, CodeWarrior is no more. I get XCode. I see all sorts of options to make a project. BSD project, Carbon, Cocoa, etc... What the heck any of these. I can guess the BSD one is very basic, but I do not understand Carbon vs Cocoa.
So what do I do? I make a basic carbon app and make a basic Cocoa app. The carbon app looks like some kind of C++ framework. The Cocoa app? "Is this another language like Java or C#? It doesn't look like a C++ language."
Guess which choice I make. Carbon. I struggle through this looking at the docs, posting on CodeGuru and whatnot until someone finally tells me about these forums and warns me about how unfriendly people are. So I make an account and start asking questions. I eventually get my app to be multi-platform to run on windows and Mac by using some API abstractions which are easy to do since I had abstracted the Windows API by my own class wrappers.
I ask a lot of questions, very few are ever answered because I am not asking about simple things, like making windows and how to get button clicks and that stuff. I am asking stuff like, "How do you change the DNS? or How do I know when a user is about to log out?" Currently on my side list as I type this, I have 27 unresolved questions. I probably found workaround for most of them, or figured it out eventually.
On this forum mostly people are helpful when the do respond, except for OrangeKay. He definitely has a chip on his shoulder.
Over the past few years my Opinion of MS has improved greatly while my opinion of Macs (from the programmer's point of view) has dropped considerably. XCode still isn't as good as VS6 which is like 15 years old, never mind Dev studio 2005 or 2008. The documentation is scattered, not easy to find, occasionally wrong, or simply missing. The examples may not even compile or contain non-existent functions. It is unbelievable how bad it is.
If Steve Jobbs wants to really get a large coder population he ought to spend some of those billions (or is it trillions) of dollars on a team that will re-write the current documentation in a correct, easy to understand, with full examples, arranged in a logical manner for everyone to use. He should say, "See MSDN online? I want something like that, only better, it has to be MUCH better." Then he should say to the XCode team, "Look at DevStudio 2008. XCode should do EVERYTHING that does. Once that is done, IMPROVE XCode even more to make 2008 look like a joke."
To bad the Developer aspect of the "Apple Experience" has not gotten "End User" treatment. Then it would be a joy to develop on Macs.
So here I am asking for help on certain things. You wonder why I do not use Cocoa. Maybe I should, maybe I shouldn't. My first look didn't look promising, and a quick look at the docs is all about GUI's. My app has NO GUI. Again, Cocoa? Maybe it will still work, but the examples and stuff I see are all about GUIs.
When I get time, I will look at cocoa even further. MFC on windows is MOSTLY about GUI stuff, but there is a small section of it that does not deal with GUIs. CString is a great MFC class. I had to get rid of it though cause Mac's do not have a similar class. I use CStdString which is a platform agnostic CString replacement.
I hope you are all a little more enlightened. BTW my Application which runs on Mac's and PCs on no less then 3 MILLION Machines has not crashed ONCE in the past 2 years. There have been bugs, but nothing that crashed it. The bugs were mostly unforeseen situations, like what if the guy has 15 network adapters that are all LIVE? I didn't plan for that, there were complications, the server got some strange data, but it didn't crash (My app, not the server. It crashes on occasion still). Are there bugs in my code? I am sure there are, but I do not know of any, because if I did, it would be fixed.

Run shell commands using java program

Hi guys,
I am trying to run shell commands like cd /something and ./command with arguments as follows, but getting an exception that ./command not found.Instead of changing directory using "cd" command I am passing directory as an argument in rt,exec().
String []cmd={"./command","arg1", "arg2", "arg3"};
File file= new File("/path");
try{
Runtime rt = Runtime.getRuntime();
Process proc = rt.exec(cmd,null,file);
proc.waitFor();
System.out.println(proc.exitValue())
BufferedReader buf = new BufferedReader(new InputStreamReader(proc.getInputStream()));
catch(Exception e)
{e.printStackTrace();
So can anyone please tell me what is wrong with this approach? or is there any better way to do this?
Thanks,
Hardik

warnerja wrote:
What gives you the idea that the process to execute is called "./command"? If this is in Windows, it is "cmd.exe" for example.It does not have to be cmd.exe in Windows. Any executable or .bat file can be executed as long as one either specifies the full path or the executable is in a directory that is in the PATH.
On *nix the file has to have the executable bit set and one either specifies the full path or the executable must be in a directory that is in the PATH . If the executable is a script then if there is a hash-bang (#!) at the start of the first line then the rest of the line is taken as the interpreter to use. For example #!/bin/bash or #!/usr/bin/perl .
One both window and *nix one can exec() an interpreter directly and then pass the commands into the process stdin. The advantage of doing this is that one can change the environment in one line and it remains in effect for subsequent line. A simple example of this for bash on Linux is
import java.io.OutputStreamWriter;
import java.io.Writer;
public class ExecInputThroughStdin
    public static void main(String args[]) throws Exception
        final Process process = Runtime.getRuntime().exec("bash");
        new Thread(new PipeInputStreamToOutputStreamRunnable(process.getErrorStream(), System.err)).start();
        new Thread(new PipeInputStreamToOutputStreamRunnable(process.getInputStream(), System.out)).start();
        final Writer stdin = new OutputStreamWriter(process.getOutputStream());
        stdin.write("xemacs&\n");
        stdin.write("cd ~/work\n");
        stdin.write("dir\n");
        stdin.write("ls\n");
        stdin.write("gobbldygook\n"); // Forces output to stderr
        stdin.write("echo $PATH\n");
        stdin.write("pwd\n");
        stdin.write("df -k\n");
        stdin.write("ifconfig\n");
        stdin.write("echo $CWD\n");
        stdin.write("dir\n");
        stdin.write("cd ~/work/jlib\n");
        stdin.write("dir\n");
        stdin.write("cat /etc/bash.bashrc\n");
        stdin.close();
        final int exitVal = process.waitFor();
        System.out.println("Exit value: " + exitVal);
}One can use the same approach with Windows using cmd.exe but then one must be aware of the syntactic differences between commands running in .bat file and command run from the command line. Reading 'help cmd' s essential here.
The class PipeInputStreamToOutputStreamRunnable in the above example just copies an InputStream to an OutputStream and I use
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
public class PipeInputStreamToOutputStreamRunnable implements Runnable
    public PipeInputStreamToOutputStreamRunnable(InputStream is, OutputStream os)
        is_ = is;
        os_ = os;
    public void run()
        try
            final byte[] buffer = new byte[1024];
            for (int count = 0; (count = is_.read(buffer)) >= 0;)
                os_.write(buffer, 0, count);
        } catch (IOException e)
            e.printStackTrace();
    private final InputStream is_;
    private final OutputStream os_;
}

Executing shell commands from Java.

I want to execute shell commands in Java using the Runtime.exec( String ) method.
The method works fine under Linux OS, but under Windows '98 the method didn't work at all!
For example the following call: Runtime.exec( "dir" ) throws an exception showing that the command was not completed. If I replace dir with ls under Linux all is good. What is the problem with the Microsoft Windows '98 ? Is there any solution at my problem ?!
thx in advance!

hey JSarmis,
You can help me... "ls" doesn't work for me on linux.. using Runtime.exec, some commands work, others don't... you may hold the key to what i need? How did u get "ls" to work?

How to execute a shell command in java?

here, my environment is redhat 7, jdk 1.5.
i don't know how to use the shell command in java.
i want to use this function:
#include <stdlib.h>
int system(const char * string);
please give me some ideas. and Thank you so much if coming with a little demo.

i know i should use JNI. because i have to use C lib.
but i have already use JNI to wrapper the original code the cpp code and java code is :
//: appendixb:UseObjImpl.cpp
//# Tested with VC++ & BC++. Include path must
//# be adjusted to find the JNI headers. See
//# the makefile for this chapter (in the
//# downloadable source code) for an example.
#include <jni.h>
#include <stdlib.h>
extern "C" JNIEXPORT void JNICALL
Java_UseObjects_changeObject(
JNIEnv* env, jobject, jobject obj) {
jclass cls = env->GetObjectClass(obj);
jfieldID fid = env->GetFieldID(
cls, "aValue", "I");
jmethodID mid = env->GetMethodID(
cls, "divByTwo", "()V");
int value = env->GetIntField(obj, fid);
printf("Native: %d\n", value);
env->SetIntField(obj, fid, 6);
env->CallVoidMethod(obj, mid);
value = env->GetIntField(obj, fid);
system("preprocess -path sha.c");
printf("Native: %d\n", value);
} ///:~
//: appendixb:UseObjects.java
// From 'Thinking in Java, 2nd ed.' by Bruce Eckel
// www.BruceEckel.com. See copyright notice in CopyRight.txt.
class MyJavaClass {
public int aValue;
public void divByTwo() { aValue /= 2; }
public class UseObjects {
private native void
changeObject(MyJavaClass obj);
static {
// System.loadLibrary("UseObjImpl");
// Linux hack, if you can't get your library
// path set in your environment:
System.load(
"/root/jproj/UseObjImpl.so");
public static void main(String[] args) {
UseObjects app = new UseObjects();
MyJavaClass anObj = new MyJavaClass();
anObj.aValue = 2;
app.changeObject(anObj);
System.out.println("Java: " + anObj.aValue);
} ///:~
i modify this two file which is from TIJ-2edition.
the output is
Native: 2
Native: 3
Java: 3
but what i want to be executed "preprocess -path sha.c" does not work.
i have change the command to, such as "df", "ls" etc. but none of them works
please help me.

Executing Unix command through Java

Hi,
Hi, I am trying to run some unix command through:
Runtime.getRuntime().exec("some unix command line");
I am running the code on Linux platform. However, I always got some errors. Here are the stack trace of them:
java.io.IOException: Cannot allocate memory
java.io.IOException: java.io.IOException: Cannot allocate memory
        at java.lang.UNIXProcess.<init>(UNIXProcess.java:148)
        at java.lang.ProcessImpl.start(ProcessImpl.java:65)
        at java.lang.ProcessBuilder.start(ProcessBuilder.java:451)
        at java.lang.Runtime.exec(Runtime.java:591)
        at java.lang.Runtime.exec(Runtime.java:429)
        at java.lang.Runtime.exec(Runtime.java:326)Anybody has any idea why is this happening? Thanks.
Aulia

Hi, thanks for your reply so far. I tried the following code:
     public boolean executeCommand() {
          boolean success = true;
          for (int i = 0; i < 5; i++) {
               Process p = null;
               try {
                    p = Runtime
                    .getRuntime()
                    .exec("ls");
                    InputStreamReader inR = new InputStreamReader(p
                              .getErrorStream());
                    BufferedReader buf = new BufferedReader(inR);
                    String line;
                    while ((line = buf.readLine()) != null) {
                         System.out.println(line);
                    p.destroy();
               } catch (Exception e) {
                    System.err.println(e.getMessage());
                    e.printStackTrace();
                    success = false;
               } finally {
                    p = null;
          return success;
     }However, it still throws the same exception. Yes, I put it in a tight loop, but not recursively.

Execute shell command from Java

Hi all,
I need some idea for executing shell script from Java programe.
For example i have start.sh script in /tmp/start.sh folder of unix server.
I want to execute shell script from local java code.
Any idea on this.

Hi,
Read the following articles/posts, maybe this could help you:
How to execute shell command from Java
Running system commands in Java applications | java exec example | alvinalexander.com
Want to invoke a linux shell command from Java - Stack Overflow

Is it possible to run a command prompt(or DOS Command) through flash and run a Activex(.OCX) file from flash

Hi all
Is it possible to run a command prompt(or DOS Command) through flash.If it possible please guide me to do that throug AS 3.0.
and
Is it Possible to run a activex (.OCX) file from flash. If it is so please guide me the way to do it
Thanks and Advance
Sankar.M.S

Or create a desktop shortcut (in Windows) or an application launcher ( in Linux GUI).

How can i call shell command in JSP?

My OS is Linux, and my WWW server is Tomcat,
can i call shell command , such as gcc or setup,
If yes, how can i? Would you give a source example?
Thank you!

Hi,
I did this simple class to launch a process and after the cose there is an example to use it:
import java.io.*;
import java.util.*;
public class ProcessExec {
private String[] command;
private StreamGobbler errorGobbler;
private StreamGobbler outputGobbler;
public ProcessExec() {
public ProcessExec ( String[] command) {
this.command = command;
this.errorGobbler = null;
this.outputGobbler = null;
public String[] getCommand() {
return ( this.command );
public void setCommand( String[] command ) {
this.command = command;
public void exec() {
try{
Runtime rt = Runtime.getRuntime();
Process proc = rt.exec(this.command);
// any error message?
errorGobbler = new StreamGobbler(proc.getErrorStream(), "ERROR");
// any output?
outputGobbler = new StreamGobbler(proc.getInputStream(), "OUTPUT");
// kick them off
errorGobbler.start();
outputGobbler.start();
}catch (Throwable t){
t.printStackTrace();
}//catch
public String getErrorMessage() {
while ( this.errorGobbler.isAlive() ) {;}
return ( this.errorGobbler.getResult().toString() );
public String getOutputMessage() {
while ( this.outputGobbler.isAlive() ) {;}
return ( this.outputGobbler.getResult().toString() );
} // ProcessExec
Example to use it:
try {
ProcessExec pe = new ProcessExec( command );
pe.exec();
errorMessage = pe.getErrorMessage();
outputMessage = pe.getOutputMessage();
} catch ( Exception e ) {
System.out.println (e);
As you can guess the string "command" must be the command you have to launch and errorMessage and outputMessage will contain the error and the output that the process will generate.
Try it; i hope this will help you.
Cheers.
Stefano

Linux shell commands through linux

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