Invoking unix executable from java

How do I capture the RETURN VALUE from the Unix process (executable) invoked from java program

After using Runtime.getRuntime() , and using runtime.exec(ProcessName), You get a Process object you can use waitFor() method of process. After that call process.getInputStream() and encapsulate in DataInputStream then onwards u can use readLine method to get value it is returned.
S.M.Reddy.

Similar Messages

  • Invoking UNIX executables from client side forms

    Has anyone had any success invoking UNIX executables from forms without using "hosted" rsh and/or rcp commands? There are too many of these UNIX executables to convert to PL/SQL procedures. Have developed a technique using dbms_pipe package but requires a daemon on UNIX side. Any thoughts or sugesstions? Thanks.

    I have done alot of this and the only way that I know of is using dbms_pipe. It looks alot harder than it really is. Also you may want to look at using Forms Server on your database server. I know that you can use the host command, which if running on your database server will send the command to your unix server.

  • Execute unix commands from Java

    Hi,
    I have a client application running on windows. This client should connect to a unix server and check for the existence of a file and display the result as "File found/File not found". In order to connect from windows to the unix server, I used the sockets and the connection is successfully established. The second part is to check for the presence of the file in unix server. I searched in google.com and the option I found to execute a unix command from java is the "Runtime.exec()". Runtime.exec is considered as the less effective (not a favorable) one.
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    Aishu

    So, please let me know how I can execute the above unix commands without Runtime.exec()You have a client and a server.
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    That means that something must in fact being running on the server before the client does anything at all.
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    So is something like that running?
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  • 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.

  • Call an interactive UNIX command from java

    Hi,
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    import java.io.*;
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    public static void main(String args[]) throws Exception {
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    BufferedReader stdError = new BufferedReader(new InputStreamReader(p.getErrorStream()));
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    stdInput.close();
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    System.out.println("exceptions caught: ");
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    There are only about 9 billion responses a day on how to do this. Use the search feature.

  • Run a UNIX Script from java

    Hi,
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    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/

  • 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[])
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    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.
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    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 to invoke dos shell from java program

    Hi,
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    Can any one help me in this issue.
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    try{
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    catch(IOException e) {
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    Does it throw a different exception?
    Or does it just do nothing at all?
    It does nothing at all[/b
    Is this a standalone Java app?
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  • How to invoke BPEL process from JAVA API

    Hi Guys
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    Deepak

    See http://download-west.oracle.com/docs/cd/B31017_01/integrate.1013/b28981/invoke.htm#sthref1373 and the JavaDocs http://download-west.oracle.com/docs/cd/B31017_01/integrate.1013/b28986/toc.htm.

  • Invoking Microsoft Word from Java code

    I want to invoke Microsoft word from Java code. How can i do this plz ............... Help

    do something along these lines.... here is an example with notepad
    create a .bat file with the commmand in to run notepad for example
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    The Java program
    import java.util.*;
    import java.io.*;
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  • Invoke beanshell methods from java

    Hello
    I'm learning beanshell and using it to write scripts that are ran in JDK 6.
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    Look at the Javadoc documentation of IllegalAccessError. It says:
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  • Invoke a CFC from Java

    Can you give me an example of where or why you would invoke a CFC from Java?  I have used CF to call Java and then having Java return "data" back to the CFC but not sure I know why I would want my Java to invoke a CFC.
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    Hi,
    how to invoke a exe file from a java program. (
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    is it possible ?Yep.
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  • Invoking dos commands from java

    hi all,
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    thanks in advance
    Regards

    Hai,
    Thanks for your respond.
    If I give "cmd" command only, I am getting dos command window, but I didn't get the prompt like
    c: or d:
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    Expecting more helps
    Joseph

  • 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
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    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
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    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();
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    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

  • Invoking Unix command with java stored procedure

    Hi,
    I have a perfectly working environment and now I am trying to replicate the same in another server. I have a java stored procedure which invokes the Unix command using java Runtime.exec() in my code named "run". I am sure that the code is called and the java class run is resolved in oracle as I could see that in dba_java_resolvers dictionary. But I am not sure whether the function in java is called or whether a exception is thrown. how to identify this? Could there be any thing to do with settings in oracle side? please help me.
    Thanks in advance,
    Marutha

    Hi,
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    I'm testing similar solution and if there are any errors or Oracle can't execute the program due to permissions or other issues the error information will be displayed. Also in the Java class itself you need to catch exceptions and print stack trace to standard output.
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    begin
    dbms_output.enable(1000000);
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    exception
    when others then dbms_output.put_line('Sql error='||substr(sqlerrm,1,250));
    end;
    <system_command.run_command> - replace with a call to your java stored procedure.

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