Java programming Linux

Hi all.
I get an interesting taks - a programm cli for UNIX base system. No matter what he must do, in this important topic that it should support Linux pipelining, for example can run "ls |" use it less", but of course program of specific orders, but support this form of orders. And the Java language.
I'm new on Linux and Linux programming, but try to read as much as possible, please excuse me if I said sth wrongly. :-)
OK, I get this task and start thinking. First idea was:
1. I get a table of command line commands in args [].
2. then just cut chain in pieces using the symbol "|" and analyse one by one.
Idea was not bad, but a man who gie me this task (this is a kind of traning for me), said that I do it way wornd - unix shell support pipelining for my program, but the program needs to be done in a specific way.
OK, I'm starting to read on linux, linux ipc and api pipes. Find examples in C++, where programm to create a child process (using pipe (), fork parent and child processes begin to send information using pipes. If I understand correctly this is what is meant in the words "special way".
I need an adviser to expirenced programmers. How do I programm pipelining? As far as I understand I have no need to analyze all the command line and children in parties to ' | ', I should just I do program that can run any possible command in single and add support for linux pipilining and shell will send commands to my show by its path without my separate. Am I wrong? If so, I still do not follow what I would add to program to the shell allow use pipelining?

sphinks wrote:
So I should do 2 method works with all types of entry.
In this case
java myProgram "filename"
I will exercise my sth like this:
FileInputStream fis = new FileInputStream(args[0]);
...
In this case
cat "filename"|java myProgram

You talk about your program to make his entrance to one of two different sources. Is it it reads a file, either he read it System.in. It's not uncommon; a lot of unix programs that. For example, cat, grep and sed all do. If you provide a file name, they read from this file. Otherwise, they read from stdin. So you deal with the command line, and it indicates the playback of a file, you open this file and read it if you read from System.in.

Completely separate from that is what others have already said: If your program is read from stdin (System.in), then it don't know or care if this flow is coming directly from the console and passing along what the user types, or if it is channeled through the output of another process, or if it is redirected from a file or here - doc. Piping and redirection are handled by the shell, and your program is totally unaware of them. It simply reads System.in.

In addition, make sure you understand what is the same and what is different about the following:

grep foo x.txt
vs.
cat x.txt | grep foo
vs.
grep foo < x.txt

or in the case of your program

java -cp . MyClass x.txt
vs.
cat x.txt | java -cp . MyClass
vx.
java -cp . MyClass < x.txt

Edited by: jverd April 28, 2011 10:35

Tags: Java

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  KCPOS_KTH_USER_104      NUMBER,
  KCPOS_KTH_USER_105      NUMBER,
  KCPOS_KTH_USER_106      NUMBER,
  KCPOS_KTH_USER_107      NUMBER,
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  KCPOS_KTH_USER_109      NUMBER,
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  KCPOS_KTH_USER_306      VARCHAR2(50 BYTE),
  KCPOS_KTH_USER_307      VARCHAR2(50 BYTE),
  KCPOS_KTH_USER_308      VARCHAR2(50 BYTE),
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(REX_SEQ_NBR, REVISION_NUMBER, STORE_NUMBER, TRAN_DATE, TERMINAL_NUMBER, TRAN_NUMBER)

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(
  TRAN_SEQ_NBR            NUMBER(12),
  ORG_NUMBER              NUMBER,
  STORE_NUMBER            NUMBER,
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  TERMINAL_NUMBER         NUMBER,
  TRAN_NUMBER             NUMBER,
  TRAN_TIME               DATE,
  BATCH_NUMBER            VARCHAR2(8 BYTE),
  BATCH_TYPE              VARCHAR2(4 BYTE),
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  RETURNED_AMOUNT         NUMBER(9,2),
  NETCASH                 NUMBER(12,2),
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  RTN_WITH_RCPT           VARCHAR2(1 BYTE),
  REASON_CODE             VARCHAR2(4 BYTE),
  PASSWORD                VARCHAR2(10 BYTE),
  RINGTIME                DATE,
  CUST_NUMBER             VARCHAR2(12 BYTE),
  CUST_ID                 VARCHAR2(50 BYTE) ENCRYPT USING 'AES256' NO SALT,
  ZIP_CODE                NUMBER,
  POSTAL_CODE             VARCHAR2(9 BYTE),
  PV_TIME_LAPSE           NUMBER,
  ORIG_STORE_NBR          NUMBER,
  ORIG_TRAN_DATE          DATE,
  ORIG_TRAN_TYPE          VARCHAR2(4 BYTE),
  ORIG_TERM_NBR           NUMBER,
  ORIG_TRAN_NBR           NUMBER,
  ORIG_SALE_AMT           NUMBER(12,2),
  ORIG_TENDER_CODE        VARCHAR2(4 BYTE),
  ORIG_CLERK_CODE         VARCHAR2(15 BYTE),
  PREV_TRAN_TYPE          VARCHAR2(4 BYTE),
  PREV_SUB_TRAN_TYPE      VARCHAR2(4 BYTE),
  GIFT_REGISTRY_ID        VARCHAR2(25 BYTE),
  NO_OF_ITEMS             NUMBER,
  TAX_EXEMPT_ID           VARCHAR2(18 BYTE),
  TRAN_RINGTIME           NUMBER,
  AUDITED                 VARCHAR2(1 BYTE),
  BATCH_VERSION           NUMBER(9,2),
  BATCH_SOURCE            VARCHAR2(5 BYTE),
  CREATE_DATE             DATE,
  CREATE_ID               VARCHAR2(32 BYTE),
  CREATE_PROC             VARCHAR2(32 BYTE),
  MOD_DATE                DATE,
  MOD_ID                  VARCHAR2(32 BYTE),
  MOD_PROC                VARCHAR2(32 BYTE),
  TERMINAL_GROUP          NUMBER,
  USER_DEF_1              NUMBER,
  USER_DEF_2              NUMBER,
  USER_DEF_3              NUMBER,
  USER_DEF_4              NUMBER(12,2),
  USER_DEF_5              NUMBER(12,2),
  USER_DEF_6              NUMBER(12,2),
  USER_DEF_7              VARCHAR2(50 BYTE),
  USER_DEF_8              VARCHAR2(50 BYTE),
  USER_DEF_9              VARCHAR2(50 BYTE),
  MANAGER_NUMBER          VARCHAR2(15 BYTE),
  MANAGER_REASON_CODE     VARCHAR2(10 BYTE),
  MANAGER_SWIPED          VARCHAR2(1 BYTE),
  PHONE_NO                NUMBER(11),
  KCPOS_KTH_USER_101      NUMBER,
  KCPOS_KTH_USER_102      NUMBER,
  KCPOS_KTH_USER_103      NUMBER,
  KCPOS_KTH_USER_104      NUMBER,
  KCPOS_KTH_USER_105      NUMBER,
  KCPOS_KTH_USER_106      NUMBER,
  KCPOS_KTH_USER_107      NUMBER,
  KCPOS_KTH_USER_108      NUMBER,
  KCPOS_KTH_USER_109      NUMBER,
  KCPOS_KTH_USER_110      NUMBER,
  KCPOS_KTH_USER_201      NUMBER(12,2),
  KCPOS_KTH_USER_202      NUMBER(12,2),
  KCPOS_KTH_USER_203      NUMBER(12,2),
  KCPOS_KTH_USER_204      NUMBER(12,2),
  KCPOS_KTH_USER_205      NUMBER(12,2),
  KCPOS_KTH_USER_206      NUMBER(12,2),
  KCPOS_KTH_USER_207      NUMBER(12,2),
  KCPOS_KTH_USER_208      NUMBER(12,2),
  KCPOS_KTH_USER_209      NUMBER(12,2),
  KCPOS_KTH_USER_210      NUMBER(12,2),
  KCPOS_KTH_USER_301      VARCHAR2(50 BYTE),
  KCPOS_KTH_USER_302      VARCHAR2(50 BYTE),
  KCPOS_KTH_USER_303      VARCHAR2(50 BYTE),
  KCPOS_KTH_USER_304      VARCHAR2(50 BYTE),
  KCPOS_KTH_USER_305      VARCHAR2(50 BYTE),
  KCPOS_KTH_USER_306      VARCHAR2(50 BYTE),
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  KCPOS_KTH_USER_308      VARCHAR2(50 BYTE),
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  KCPOS_KTH_USER_402      DATE,
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  RTA_RTN_COMMID          NUMBER,
  RTA_RTN_EVNTID          NUMBER,
  RTA_RTN_QTY             NUMBER,
  RTA_RTN_RCPT_SCAN       VARCHAR2(1 BYTE),
  RTA_RTN_REFUND_AMT      NUMBER(9,2),
  RTA_RTN_TYPE_CODE       VARCHAR2(4 BYTE),
  RTA_RTN_WITH_RCPT       VARCHAR2(1 BYTE),
  RTA_RTN_COUNT           INTEGER,
  SDEDVAL1                VARCHAR2(50 BYTE)
)

-Samples

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480,1,11,12024007,6/11/2012,,1,692,6/11/2012,155,7,6/11/2012 2:47:10 PM

Then you describe two stored procedures separated. One that has an OUTPUT parameter which is a SYS_REFCURSOR (that you posted initially). And will need you a second procedure that takes as a parameter IN the decrypted CUST_ID and whatever: key (s) is required for the UPDATE is generated.

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I created a java program using eclipse... How package and run the program under windows or Unix?

Thank you
Right click on the project in the Package Explorer. In the menu drop-down run as-> a run Configuration. Click the new button. In the name box, choose a name for your configuration. Make sure that the right project is illustrated in the area of the project. If this is not the case click on the Browse button and select the right project. Make sure that the right main class is listed in the main class field. If this is not the case click on the Browse button and select the correct class. Click on apply. Click Close. In the context menu, click Export. Double-click the Java folder, so it goes down. Double-click the executable JAR file. In the launch Configuration drop-down list box, make sure that the right project and main class appears in this form: name of principal name Configuration class. Click the Browse button to set the location that you save the Jar file. Click Finish. Now, to find the JAR file and double-click it to start the program.

Need to capture logs the server java program
Hello

I need to capture all the logs from the server weblogic through a java program. My application is deployed inside the server and I need a java program within the application that can capture all the logs from the server and store them in a string or any other data variable, so that I can be able to reassign logs to another program.

Any help would be much appreciated.

Thank you
Abhay

Published by: user10613279 on July 26, 2011 04:02
Hello

You can create your own message handler: http://download.oracle.com/docs/cd/E21764_01/web.1111/e13739/listening.htm#BABBAEBG

What about Peter Lorenzen

Find the path of the competing java program
Hi all

I work with iRecruitment responsibility of the recruiter.
Here I can create new job opportunities.
After the creation of vacancies, they should be approved by a Manager

When I create vacancy and submit this vacancy for approval
It is stored in table hr_api_transactions.

and when the Manager has approved this particular post then this vacancy
stored in another table per_all_vacancies.
But the problem is this position that stored in the hr_api_transactions table
It removes from this table.
I want to know who transfer the information of this hr_api_transactions to per_all_vacancies table manager vacancy.

In my view, there are some concurrent java programs that transfers information of vacancy from one table to another table.

If there is no concurrent java programs, so that that work?
Double wire.

How to find the code-behind application
How to find the code-behind application

New enforcement of Java program

Hey,.

So I would be able to run another java program.

File directory = new File(".");
            try {
                List<String> l = new ArrayList<String>();
                l.add("Java "+directory.getCanonicalPath+"AnotherProject/bin/main.class");
                ProcessBuilder pb = new ProcessBuilder(l);
                pb.start();
            } catch (IOException ex) {
                ex.printStackTrace();
            }

What I am doing wrong? I get the error message: "No such file or directory."

Edited by: Moopz on November 8, 2010 01:01

It is entirely up to you! This will be your point of entry. If you are able to think you application as a server of two parts, a customer and you have no problem to build the parties separated in applications of 'work', then their respective main methods would be good enough as beginning-methods. It's just a name.

Really, the principle is simple, let's assume that you have a HelloWorld class (think server) and one as a search for class GoodbyeMoon (think client):

public class GoodbyeMoon {
     public static void main(String[] args) {
          System.out.println("Good bye, Moon!");
     }
}

Then you're application can do this:

public class LoginMain {
     public static void main(String[] args) {
                // ... GUI to select MOON or WORLD
                if (userSelection == MOON ) {
                      GoodbyeMoon.main(null);
                } else {
                      HelloWorld.main(null);
                }
     }
}

Java programming Linux

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