Sudo or su command using java problem

hi im having a bit of trouble with the sudo or su command using java:
e.g.
try { Process myProcess = Runtime.getRuntime().exec("sudo ....ect"); my lil application just crashes ever time i try using this command. i know you usually have to type
password in terminal to get privileges. but since my application needs output of certain commands
i need a way to get round.
i was thinking of trying to input the password some how but im pretty much stuck as to how to do it.
thanks for the help

prometheuzz wrote:
sabre150 wrote:
:-( So I'm dumb?You probably know I wasn't serious, but just for the record: note the smiley when I posted it.:-) of course! When all other tools won't do the job then I use a hammer.

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Running unix command using java shows error

Hi All,
I am trying to run UNIX move command using Java exec method but its throwing error, unable to rename. Here below is the code i am trying to run to move all files from one directory to another directory. source and destination directory exists.
public class Demo
    public static void main(String args[])
        try
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}if i give "mv /home/demo1 /home/demo2" in exec method, its working, with * character its giving problem.
Please help me in resolving the problem.
Thank you

Characters like *, >, &, |, etc. are interpreted by the command shell--that is by the bash, zsh, etc. programs. When you execute a command with ProcessBuilder or Runtime.exec, you're not going through one of those shells, so their interpretation of those characters is not available.
In your code, the character * is being delivered directly to the mv command (which doesn't think * is anything special), as opposed to being turned into a list of files and directories as it would be when it's interpreted by the shell. The mv command doesn't know anything about the * character being special.
If you want to have those shell interpretations, you need to execute the command through a shell. One example is like so, but a) you'll want to read up on the methods in exec() that take arrays of String, and b) you'll want to read up on ProcessBuilder, and c) you'll need to check your shell's man pages to see the exact syntax and arguments.
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Execute unix command using java

Hello
Can we execute a unix command using java? If it is how we can execute. Is this affect the performance of the program.
Thanks

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884543 wrote:
Hi,
I try to execute a command using java code. output of the command contains spanish characters. Few of these characters getting garbled after the command execution.
Runtime r = Runtime.getRuntime();
          Process p = null;
String pgm="ipconfig /all";
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BufferedReader br=new BufferedReader(new InputStreamReader
                              (p.getInputStream()));
while((val = br.readLine()) != null){ System.out.println(val);
          catch (Exception e)
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I tried to run the code using -Duser.language=es -Duser.region=ES -Dfile.encoding=Cp850, but this did nt help. I could see the outputs properly in command prompt,
If i redirect the output to a text file , it is getting garbled,
Please let me know to solve this issue.Set the character set to UTF-8 to your InputStreamReader, for More details on usage refer the java api :
http://download.oracle.com/javase/6/docs/api/java/io/InputStreamReader.html

Creating Tail Command using Java

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hello,
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Running System Commands using Java

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Send SSH Command using java

Ok. I hate this, but this is they way they have implemented it. I do not have access to the server code that this applicatio sits on, so I am only able to send specif commands with java through there interface. One of the commands for example is: password_reset "username" "new_password", there is also search_user "username", and uinfo "username". One of the command I really want to send is the password_reset command, but before I can do that I need to establish a ssh connection with username, and password. Not the username or password of the user that I am resetting, but the username and password of a user that has the privilege to reset passwords.
anyway someone said I could just user the execCommand("password_reset " + username + " " + password ) command. If that is true then How do I do the ssh connection? any examples would be great. I have one, but it is not working for some reason.
Here is the code:
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import com.trilead.ssh2.ChannelCondition;
import com.trilead.ssh2.Connection;
import com.trilead.ssh2.Session;
import com.trilead.ssh2.StreamGobbler;
public class SshTest
public static void main(String[] args)
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      String user = "someuser";
      String user_pass = "somepassword";
      conn = new Connection(host);
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      // vusertochange
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      StreamGobbler stdout = new StreamGobbler(sess.getStdout());
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      BufferedReader stderr_reader = new BufferedReader(new InputStreamReader(stderr));
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The error I get is:
STDOUT:cshell won't execute arbitrary command 'password_reset vusertochange newpasswordtest'
any ideas what I am doing wrong?

orozcom wrote:
STDOUT:cshell won't execute arbitrary command 'password_reset vusertochange newpasswordtest'It sounds like the permissions with the user you're connecting with won't allow this operation.
Don't know much about this, but maybe try 'su' and then 'password_reset ...' instead?

Run shell commands using java program

Hi guys,
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So can anyone please tell me what is wrong with this approach? or is there any better way to do this?
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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
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import java.io.Writer;
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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;
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        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_;
}

Unable to execute a command line command using Java

I am trying to run a command to add a group name. It is executed in command prompt of Windows 2003/2000
Say this is the command I want to execute:
net localgroup LordSM /add
Here LordSM is the group name.
I wrote the following code but it does not seem to work. Please suggest.
String ABC=Value1TextField.getText();
Value2Label.setText("Value is now " + ABC);
// Above is to get value from a JText Field
// Below is the code to run command for adding a group name to a System.
String ExecutedCmd = "net localgroup " + ABC + "/add";
Process p = Runtime.getRuntime().exec(ExecutedCmd);
BufferedReader stdInput = new BufferedReader(new InputStreamReader(p.getInputStream()));
BufferedReader stdError = new BufferedReader(new InputStreamReader(p.getErrorStream()));
// read the output from the command
System.out.println("Here is the standard output of the command:\n");
while ((s = stdInput.readLine()) != null)
{ System.out.println(s); }
// read any errors from the attempted command
System.out.println("Here is the standard error of the command (if any):\n");
while ((s = stdError.readLine()) != null)
{ System.out.println(s); }
I am trying to run a command to add a group name. It is executed in command prompt of Windows 2003/2000
Say this is the command I want to execute:
net localgroup LordSM /add
Here LordSM is the group name.
I wrote the following code but it does not seem to work. Please suggest.
String ABC=Value1TextField.getText();
Value2Label.setText("Value is now " + ABC);
// Above is to get value from a JText Field
// Below is the code to run command for adding a group name to a System.
String ExecutedCmd = "net localgroup " + ABC + "/add";
Process p = Runtime.getRuntime().exec(ExecutedCmd);
BufferedReader stdInput = new BufferedReader(new InputStreamReader(p.getInputStream()));
BufferedReader stdError = new BufferedReader(new InputStreamReader(p.getErrorStream()));
// read the output from the command
System.out.println("Here is the standard output of the command:\n");
while ((s = stdInput.readLine()) != null)
{ System.out.println(s); }
// read any errors from the attempted command
System.out.println("Here is the standard error of the command (if any):\n");
while ((s = stdError.readLine()) != null)
{ System.out.println(s); }
It does not seem to work means, that no Standard Error is defined, when it executes and group name is not added as well. The following is JUnit Test Result: Hope it gives a better idea of the problem I am facing:
compile:
run:
Here is the standard output of the command:
Here is the standard error of the command (if any):
The syntax of this command is:
NET LOCALGROUP [groupname [/COMMENT:"text"]] [DOMAIN]
groupname {ADD [/COMMENT:"text"] | /DELETE} [DOMAIN]
groupname name [...] {ADD | /DELETE} [DOMAIN]
Got it
BUILD SUCCESSFUL (total time: 10 minutes 49 seconds)
I had even tried this:
Runtime rt =Runtime.getRuntime();
String[] cmd = new String[3];
cmd[0] = "cmd.exe";
cmd[1]="net localgroup";
cmd[2] =ABC + "/add";
rt.exec(cmd);
but again, it does not give any error as such, but it does not create the group name either. Please suggest. We can see the group names that are added on right clicking My Computer Icon and click Manage and then go to User & Group section. On executing either of the code nothing happens.
Thanks

Duplicate post:
http://forum.java.sun.com/thread.jspa?threadID=5203526&messageID=9812067#9812067

Problem in Execution of DOS Commands with JAVA.

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Sudo or su command using java problem

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