Run a UNIX Script from java

Hi,
how can i run a unix script from java application. This java application is on windows.
How can i do this.
thanks,

Hi,
how can i run a unix script from java application.
This java application is on windows.
So I think it's safe to assume that the target script is on a remote unix server.
Take a look at http://sourceforge.net/projects/sshtools/

Similar Messages

Running a Unix script from a Java class

I am trying to use SCP (Secure copy) to copy an xml file from my J2EE application to a remote Unix server using a Unix script. How can I run the Unix script from my Java class? I could not find any resource for this on the internet. Can someone help me with this please.
Thanks

I am trying this below program ,but i am getting the error please help me
import com.jcraft.jsch.*;
import com.jcraft.jsch.Channel;
import com.jcraft.jsch.JSch;
//import com.jcraft.jsch.JSchException;
import com.jcraft.jsch.Session;
//import com.jcraft.jsch.UserInfo;
import java.io.*;
public class testrad {
public static void main(String args[])
String user="usertvr";
String host="5.34.12.1";
String cmd="ls -l";
JSch jsch = new JSch();
try{
Session session=jsch.getSession(user,host,22);
session.setPassword("$yhaj23");
//UserInfo usrInfo=new MyUserInfo();
//session.setUserInfo(usrInfo);
session.connect();
Channel channel=session.openChannel("exec");
((ChannelExec) channel).setCommand(cmd);
channel.setXForwarding(true);
channel.connect();
//code
channel.setInputStream(System.in);
// channel.setOutputStream(System.out);
//((ChannelExec) channel).setErrStream(System.err);
InputStream in = channel.getInputStream();
channel.connect();
byte[] tmp = new byte[1024];
while (true)
while (in.available() > 0)
int i = in.read(tmp, 0, 1024);
if (i < 0)
break;
System.out.print(new String(tmp, 0, i));
if (channel.isClosed())
in.close();
// System.out.println("JSCH: exit-status: " +
//channel.getExitStatus());
break;
try
Thread.sleep(1000);
catch (Exception ee)
channel.disconnect();
session.disconnect();
}catch(Exception e)
{e.printStackTrace();
System.out.println("Exception"+e);}
/*public static class MyUserInfo implements UserInfo {
public String getPassword()
{ return "password"; }
public String getPassphrase()
{ return ""; }
public boolean promptPassword(String arg0)
{ return true; }
public boolean promptPassphrase(String arg0)
{ return true; }
public boolean promptYesNo(String arg0)
{ return true; }
public void showMessage(String arg0)
Here is the error
com.jcraft.jsch.JSchException: UnknownHostKey: 5.128.0.10. RSA key fingerprint is 02:a0:d6:c0:6f:69:2c:a9:a7:fa:7c:71:1c:60:ed:57
     at com.jcraft.jsch.Session.checkHost(Unknown Source)
     at com.jcraft.jsch.Session.connect(Unknown Source)
     at com.jcraft.jsch.Session.connect(Unknown Source)
     at testrad.main(testrad.java:23)
Exceptioncom.jcraft.jsch.JSchException: UnknownHostKey: 5.128.0.10. RSA key fingerprint is 02:a0:d6:c0:6f:69:2c:a9:a7:fa:7c:71:1c:60:ed:57
Can some one help me please.
I running this program from Windows to connect to remote unix boxes.

Excute unix script from java.

Hi need to excute unix script from java application.
My code is:
public class Test
public static void main(String args[])
try{
p = Runtime.getRuntime().exec("./qfe0"); //qfe0 is the name of the script.
p.waitFor();
catch(Exception e)
e.printStackTrace();
My problem is that using the waitFor() statement stuck the the script. if i don't use the waitFor() it works good but then i don't know when the script is finished.
Any idea?

The problem is likely to be that you script is either waiting for input or has filled the stdout buffer and you are not emptying it. Search this forum for this as its been answered many times before.

How execute Unix script from java?

Can I execute Unix script from java?

Yes. Using ProcessBuilder. And read [When Runtime.exec() wont|http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html]. It's old, but pretty much all of it is still true.

Problem executing Unix script from Java...

Hi there, I'm having trouble executing a unix script from a java program. The script receives multiple parameters and it seems that one of them ( or more ) is not well interpreted. When I run the script directly from a shell, the script executes without any errors. But, when I run the exact same script with the exact same parameters, it does not work.
Here is the command to execute the script with all the parameters that is executed from the shell ( with success ) and also from the java program ( with errors ):
/z/opus/dcap/intfu001.csh 'NODEBUG^NOTKPROF^NOSTACK' opus dcap JACQUES JACQUES '2625781' 'ORA$PIPE$001D00D70001' JOB^DEBUG^SINISIMU^STATPROD^DECTIDANC^81^503^4080^86^87^151^97^98^99 BUT^N^N^SPRI^0^13^24^3^J^05^N^19^19^19 >> /tmp/switcher8.999.null.pgm.test
And here is my portion of code that executes the script:
Runtime wShell = Runtime.getRuntime();
Process wProc = wShell.exec(cmd_unix_final);
wProc.waitFor();
return wProc.exitValue();
Please give me your thoughts on this!
Thanks in advance!

Ok.
Let's proceed surgically, else we'll never solve or overcome anything.
In the last your reply you wrote:
the normal output is what I get when the script runs successfully, the script first prints a few things
and then does stuff that takes at least 2 or 3 secondsWhat do you mean?
-Finally have you got your script correctly executed?
The stuffs you spoke of are really performed?
If this is the case I can't see the prob.
Is your concern only about exitValue() for it doesn't let you distinguish programmatically
the success or failure of the script execution?
Of course you surely already have a routine in your java code to handle
exceptional situations of errors from the script.
And the "normal output" is just what you must parse to detect those errors.
Then who cares about exitValue() in this case?
Don't invoke it, relay on the stdout and stderr of the script.
-Or you get only a deceiving standard output
that let you think the script execution went alright, while instead it didn't.
In this case we have to investigate some other thing.
I can't still exclude that the problem isn't related with the buffer size of the stdout
allocated by the environment to the subprocess. You spoke of few things printed out.
Be explicit. What's the size of the output you get?
And is the "normal output" complete till the very last char
or is it truncated from somewhere on?
Also it's important that you hit a ps command after the java main process terminates
(or simply when waitFor() returns) and see if the script subprocess hung up.
As an alternative approach directly call your pro*C code from Java through JNI, instead of translating it.
1. Exec.java
public class Exec{
     static{
          System.loadLibrary("Exec");
     public static native void proCFunct();
     public static void main( String[] args){
          proCFunct();
}2. javac Exec.java
3. javah Exec
4.Exec.c
#include "Exec.h"
JNIEXPORT void JNICALL Java_Exec_proCFunct(JNIEnv * a, jclass b){
     //here call the function that executes the script
5. cc -G -I$JAVA_HOME/include -I$JAVA_HOME/include/solaris -I$YOUR_INCLUDES Exec.c -o libExec.so
6. setenv LD_LIBRARY_PATH .
7. java Exec

How to run a unix script from oracle warehouse Builder

Hi,
can any one share the information about, running the unix script or scripts using oracle warehouse builder.
Regards,
Ak

One way is define a workflow. Inside the workflow you put
1)an external process that "points to" the shell script and then
2)put the mapping
The external process must have the "COMMAND" parameter set to the name of the shell script. If the script has parameters you must put them in the "PARAMETERS LIST" separated by "?" (for example, ?par1?par2).
The path where OWB executes the external process I think is the ORACLE_HOME of the OWB.
f you don't use workflow, you can try with this more complex solution. I tried with 9i and OWB 9.2 and it's working well.
You create an autonomous procedure (within a package or not) :
CREATE PROCEDURE Extract_Email_List
DECLARE
PRAGMA AUTONOMOUS_TRANSACTION;
And use the sys.shell script that you need your dba/unix admin to install first of all, with a call like that.
sys.shell('sh ' || txt_dir_name || '/send_email_marketing.sh ' || txt_dir_name || ' ' || email_addr );
Then you import your procedure into OWB and use it in your mapping with the "pre-mapping" icon (you can set parameters for your proc with constants if you want).
To implement sys.shell, go to metalink and find "Note:168065.1" - "How to call a UNIX shell script from PL/SQL".
Once it's done once, it's not so bad. But I would still recommend the workflow approach also..
I hope this helps.

How to run a Unix Script from a specific user

Hi,
I want to run a GoldenGate related unix script from a super user. I have created crontab enter from that super user. But its still running from root user. As GGSCI cannot be invoked other than super user, the Script is failing.
The Script is running fine on command prompt and from "at" batch job command.
Please give me a way to run the script from a specific user on Cron
Thanks,
Saravana

Hi.
can you show:
grep root /etc/passwd
grep <super user> /etc/passwd (It's not clear for me, what you call super user. For me - root is super user. )
ls -la /var/spool/cron/crontabs
Generaly for add cronjobs for any user need:
crontab -e <username>
For more information - man crontab
Reagrds.

How to run the perl script from java ?

Hi , I need to run the pearl script from the server and to get the result of the script thro' java using SSH
Is there any 3rd party SSH API in java ?
Please help me out
thanks in advance
karthik

This seems like a very strange thing to want to do.
What is the perl script doing?
Do other programs (not some shell script) access this server-side perl script from a different machine?
If so how do they do it?
What currently triggers the perl script to execute?
What currently handles the output from the perl script?
If you can answer these questions (and understand the answers) you should be able to come up with a different approach to this.
You do not really want to call a remote perl script from a Java program, you want to achieve the effect you think that would have if you could do it.
So find the answers to the above questions, write them on 3" x 5" cards and lay them out on your desk.
What flow of control needs to happen? Which piece of code needs to produce or consume which piece of data?
If that fails, ask you self or who ever is making you do this what are the use-cases?
If you do not know what use-cases are or do not understand them well enough try reading
Use Case Modeling (The Addison-Wesley Object Technology Series) by Kurt Bittner and Ian Spence (Paperback - Aug 30, 2002)
http://www.amazon.com/s/ref=nb_ss_gw/002-7908514-4043267?url=search-alias%3Dstripbooks&field-keywords=use+cases&x=0&y=0
It is a short and easy to read book on the subject and also one of the best.
You MUST understand WHAT you are trying to achieve before you can decide HOW you are going to achieve it.

Execute UNIX script from java not working

Hi
I am having difficulty running my java program to execute UNIX script on a Windows box. Here is my code.
public boolean executeScript() {
          try {
               String testScript= "WEB-INF/scripts/test.sh";
               File file = new File(copyToQaScript);
               System.out.println(file.getAbsolutePath());
               Process proc = Runtime.getRuntime().exec(file.getAbsolutePath());
          } catch (IOException ioe) {
               ioe.printStackTrace();
               logger.error(ioe);
          } catch (RuntimeException re) {
               re.printStackTrace();
               logger.error(re);
          } catch (Exception e) {
               e.printStackTrace();
               logger.error(e);
          return true;
     }When I execute this method, I am getting IOException as below.
java.io.IOException: CreateProcess: C:\tomcat-5.0.28\webapps\myProject\WEB-INF\scripts\test.sh error=193
Can anyone help me? Thanks.

kminkeller wrote:
Yes I have Cygwin installed. I am quite aware of that thanks Sabre.Then you need something like
      String[] command = {"bash","/home/sabre/bin/fred.sh"};
        Process p = Runtime.getRuntime().exec(command);
if the executabe directory (/home/sabre/bin in my case) is not on the PATH or
      String[] command = {"bash","fred.sh"};
        Process p = Runtime.getRuntime().exec(command);
if it is.

How can I run a Unix script from a desktop icon?

I have a Unix script I've created in vi and would like to run it by double clicking on an icon on my desktop. I would like to do this without the additional application layer of Applescript, Automator or Terminal. Is this possible?
Thanks in advance.
Howard

Sounds like a job for platypus.

Running an Unix Script from Informatica Mapping/workflow.

Hi ,
I have a need to start /stop service to a remote server (away from the DAC server ,which is on UNIX os)
how could this be done in a best way?
I am planning to do this through Informatica Workflow,and need help (technical steps Please) to do this.
1) workflow will call the Unix Script
2) Unix Script logins to the remote server
3) Unix scripts navigates to particular folder
4) Unix script executes a command to Start/Stop the server.
5) Unix Script logs out.
6) if everything done success ,Workflow will success else fail with the error code.
Regards

Hi ,
I have a need to start /stop service to a remote server (away from the DAC server ,which is on UNIX os)
how could this be done in a best way?
I am planning to do this through Informatica Workflow,and need help (technical steps Please) to do this.
1) workflow will call the Unix Script
2) Unix Script logins to the remote server
3) Unix scripts navigates to particular folder
4) Unix script executes a command to Start/Stop the server.
5) Unix Script logs out.
6) if everything done success ,Workflow will success else fail with the error code.
Regards

Can we run a unix script from sql plus

Hello,
Is there any possibility to run unix command from sql plus? I would appreciate if you can provide with the syntax.
Thank You
KK

user539616 wrote:
Hello,
Is there any possibility to run unix command from sql plus? I would appreciate if you can provide with the syntax.
Thank You
KKWithin sqlplus you can run
1) SQL statements
2) PL/SQL blocks
3) any valid sqlplus command.
SQLplus commands are documented in the SQLPlus reference manual. For 10g this is found at http://docs.oracle.com/cd/B19306_01/server.102/b14357/toc.htm. You might be interested in the HOST command, detailed at http://docs.oracle.com/cd/B19306_01/server.102/b14357/ch12026.htm#sthref2314
Just beware that the HOST command (or the shortcut version of it alluded to by Warren Tolentino) spawns a child process. When control comes back to sqlplus, that child process is gone.
What is the business problem you are trying to solve? If we knew that we could probably give better advice than blindly giving you the correct technical answer to a narrow question.

Executing unix scripts from java...

Hi guys,
I'm pretty new at this java stuff, but can someone tell me if it's possible to have a java object that connects to a specific unix box through a given IP and Port and execute a Unix shell command? The shell script creates a file that will be later ftp'ed from the UX box back to the PC I ran the java program from. Any ideas?
Thanks in advance.

Yes I thank it can be done. I have not done it but you prob can do it through tcp/ip useing ServerSocket and socket class.Make a server with the ServerSocket class on the linux box that is listening to the port and when it gets the right signal from your client on your pc/win the server will activate the sell script with the Runtime.getRuntime().exec(shellscript);
Well just a thought GOOD LUCK

Example: Executing a shell script from java

Hi. There are many other posts in the forums related to executing a unix script from java, but I wanted to post another example that I thought might be helpful...
The key thing to executing the script is to include the -c switch for the sh command. This tells the sh command that you are passing a string to be interpreted as input. Without this switch, the script does not execute as you'd expect it to. Also, use a string array to pass each part of the sh command.
Here is a working sample class, along with a test script to execute it:
public class TestShellScript {
public static void main(String[] args)
String[] chmod = {"chmod","777","testscript1"};
String[] runscript = {"sh","-c","./testscript1 > jdata.out"};
Runtime rtime = Runtime.getRuntime();
try
rtime.exec(chmod); // Set the authorities for testing
rtime.exec(runscript); // Run the script with redirection
catch (IOException e)
e.printStackTrace();
rtime = null;
Here is a test script to wrap the java call:
#!/bin/sh
cd /<your script dir>
export -s CLASSPATH=/<your jar dir>/TestShellScript.jar
export -s PATH=/<your script dir>:/usr/bin
java TestShellScript
- Hope this helps.

I don't know exactly but the code written below is working fine try the same with your code .Even with your code instead running the code with
" ./<filename> ",if you execute it with "sh <filename>" command without changing the mode of the file it is executing properly.
import java.io.*;
import java.util.*;
public class ScriptBuilder
public ScriptBuilder()
public void writeScript() throws java.io.IOException
FileWriter writer = new FileWriter(new File("test_script"));
writer.write("#! /bin/sh\n");
writer.write("ll>/home/faiyaz/javaprac/checkll");
writer.flush();
writer.close();
Runtime rt= Runtime.getRuntime();
rt.exec("chmod 777 test_script");
rt.exec("./test_script");
} public static void main (String[] args)throws java.io.IOException
ScriptBuilder sb = new ScriptBuilder();
sb.writeScript();
}

Call Unix Script from JSP.

Hi,
I need to run a unix script from a JSP page.
JSP pages reside on a different machine.
How can i call the unix script resides on different machine from JSP.
Thanks,
Narendra

yah. I can access that machine telnet and having all credentials of that system.
Can you please share the code needed for this.
Thanks,
Narendra

Run a UNIX Script from java

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