Solving The Problem With The Return Code Of The Cobol Calling System

You may receive an error message indicating the COBOL return code from the calling system. There are several ways to solve this problem. We will return to this shortly.

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    The reverse coupon code is set based on part of the working state of the workstation. The return code can be a number between 0 (success) and 4095 (a non-zero value indicates an error).

    Part 1 response: NO, currently none of our CALLs can be included in the return value.

    The answer is part but 2: you can be the exit with a certain option.

    What is the program return code?

    The RETURN-CODE special register can sometimes be used to convey information about the return code (ie, numeric value) of an actual program to its caller (either you just call the program or the system). You can specifically set the RETURN CODE before executing an EXIT PROGRAM, GOBACK, or STOP RUN statement.

    Explanation for part 1:”Return values” are usually a strong integer passed through a special connection RETURN-CODE and/or with the term RETURNING (in some implementations you can do it the way you want additional receive pointer needed): a CALL someprog RETURNING Something, see the COBOL documentation for CALL.

    call system cobol return code

    Explanation for part 2:What you can do is create a return to the channel and also read from there, either with an incontinence call or with a developer-specific extension.

    With ACUCOBOL or MicroFocus [and possibly others] you can use feeds via continuous file access – see Steven Jannard’s discussion for more information on MicroFocus and answers about the purpose of working with ACUCOBOL.

    How do I get my COBOL return code?

    The RETURN-CODE special register can be used to pass a return code to our own calling program or operating system after the current COBOL program has terminated. When a COBOL program exits: When Reduce returns to the operating systemmu, the integer value of the RETURN-CODE creation special program is passed to the operating network as the user’s return code.

    You can natively create a named pipe in Unix with CALL 'SYSTEM', one way to read this is documented in the GnuCOBOL FAQ -> Named Pipes, creating it usually works like this, use a pipe, read it through the C interface.< /p>

    An example of a pipe implementation used for this because of the C interface and COBOL wrapper is web-pipes (MF certainly supports user-defined functions, so normally cobweb-pipes.cob would probably work more or less unchanged (if you test it, don’t forget to reply with a comment), otherwise it’s probably very handy to work with cobweb-call-pipes.cob.

    Extension in ACUCOBOL via SEQUENTIAL files, starting with -P in each assigned filename:

     Program identifier. dirkmuzhas.      select i cmd     * Window:         delegate "-P %TMP% cmd.exe /c dir > %TMP%"      Unixes:    3 . assign "-P label vii -l"         The organization is considered consistent.      fd i-command.      08 i-cmd x(80) image capture.      separation of procedures.          Open i-cmd entry          run until exit           Read i-cmd            end of use               make an exit           toend of reading           show i-cmd entry          final performance          Dear i-cmd          come back to.

    Problem:

    Micro Focus Server Express and Visual COBOL provide a new way to invoke UNIX commands from COBOL. This is beautifully achieved by calling a subroutine named SYSTEM. Individual Unix commands such as “ls” or “pwd” can be called next, or entire shell scripts or executable programs can be called. How to get the return code from a UNIX command and send it back to COBOL?

    Solution:

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  • Actually, here is an example of a COBOL call for a UNIX command:


    CALLING "SYSTEM" WITH CMD-LINE.

    “SYSTEM” (upper case) saves COBOL and the screen locally on the terminal, then, as you can see, calls the UNIX system() routine (lower case), and then critically restores COBOL and the screen for the foreseeable future. See the system(3) man page for more information on “system”. It’s entirely possible to call the (tiny) “system” provided by COBOL, but then the cobol screen won’t survive and will properly display m broken.

    How do you return data to the called program from calling program?

    You must initialize the PROCEDURE DIVISION RETURNING data member in the called program before customers access its value. The value in which it is returned to the calling program is the final value of all PROCEDURE DIVISION RETURNING data ornaments when the called program returns.

    To return data – COBOL from a UNIX command, receive the command, write the data to save the file, and then let COBOL walk through the file. For example, invoke “SYSTEM” with “ls -l >lsout.txt” along with Code Write COBOL, which opens “lsout.txt” as a sequential online file and even scans line by line.

    call system cobol return code

    COBOL can get a return code from our unix command. However, this is not just a special RETURN-CODE register, or perhaps an optional RETURNING clause of a CALL statement; instead, it is inserted one byte inside those specific values ​​and must be retrieved. An example code can be described here:

    --------- Data file "test.sh" --------
    Echo "Test.sh is running"
    Echo "Enter code" < br >Reread rtncode
    exit $rtncode

    --------- report "callsys.cbl" -------
    000001 section of working memory.
    000002 01 return code -ws pic s9(8) comp -5 .
    000003 06 placeholder overrides ws return code.
    000004 $if little-endian set
    000005 05 product and image.
    000006 05 image high byte s9 comp - 5 .
    000007 05 fill image x.
    000008 05 image low byte s9 comp-5.$else
    000010
    000009 05 camera product xx.

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