Author Topic: NetRexx on OS/2  (Read 1018 times)

Neil Waldhauer

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NetRexx on OS/2
« on: September 14, 2019, 10:41:23 pm »
We keep on having announcements. The screen shot is from 3.04, the current release is 3.08.

Running 3.08 is unchanged from 3.06. Is there some way to run NetRexx on OS/2 that I overlooked?

Quote
java -jar NetRexxF.jar -exec hello
Exception in thread "main" java.lang.UnsupportedClassVersionError: org/eclipse/j
dt/internal/compiler/tool/EclipseCompiler : Unsupported major.minor version 51.0
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:634)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:277)
        at java.net.URLClassLoader.access$000(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:212)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
        at org.netrexx.process.NetRexxC.process(NetRexxC.java:417)
        at org.netrexx.process.NetRexxC.main2(NetRexxC.java:338)
        at org.netrexx.process.NetRexxC.main2(NetRexxC.java:318)
        at org.netrexx.process.NetRexxC.main2(NetRexxC.java:314)
        at org.netrexx.process.NetRexxC.main(NetRexxC.java:168)
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André Heldoorn

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Re: NetRexx on OS/2
« Reply #1 on: September 15, 2019, 12:20:36 am »
We keep on having announcements. The screen shot is from 3.04, the current release is 3.08.

Running 3.08 is unchanged from 3.06. Is there some way to run NetRexx on OS/2 that I overlooked?

I'm not using any of RexxLA's NetRexxes, but of course there's a possibility that the alleged "OS/2 compatibility" is not perfect yet. They may or may not be using OS/2 as such: http://ibm-netrexx.215625.n3.nabble.com/NetRexx-3-08-GA-released-td4028427.html. Bug?

Jan-Erik Lärka

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Re: NetRexx on OS/2
« Reply #2 on: September 15, 2019, 07:59:39 am »
Here's a version of NetRexxC.cmd that is somewhat more sofisticated as it's based on my javarun code that tries to find and use the available java engine on the machine.

//Jan-Erik

Code: [Select]
/* Translate and compile a NetRexx program             */
/*                                                     */
/* use as:  NetRexxC hello [file2]...                  */
/*                                                     */
/*   which will use the NetRexx translator to          */
/*   translate hello.nrx to hello.java                 */
/*   then will use javac to compile hello.java         */
/*                                                     */
/* OPTIONS keywords may be added (with a -) before or  */
/* after the file specification, along with the extra  */
/* flags known to NetRexxC (such as -keep).   For      */
/* example:                                            */
/*                                                     */
/*    NetRexxC -keep -format -comments hello           */
/*                                                     */
/* Invoke with no parameters for a full list of flags. */
/*                                                     */
/* To run the class after compilation, specify -run as */
/* an option word.  Each file will be run in turn.     */
/*                                                     */
/*    NetRexxC -run hello                              */
/*                                                     */
/* Multiple programs may be specified; in this case    */
/* they are all run (if requested) after all compiles. */
/*                                                     */
/* ----------                                          */
/* 1996.09.02 -- handle Warnings from NetRexxC (rc=1)  */
/* 1996.12.14 -- use COM.ibm.netrexx.process           */
/* 1998.05.25 -- pass NETREXX_JAVA setting to java.exe */
/* 2011.09.01 -- use org.netrexx.process               */
/* 2011.09.01 -- remove -xms4M                         */

parse arg args
w=wordpos('-run', args)
if w>0 then do; run=1;   args=delword(args,w,1); end; else run=0
w=wordpos('-nocompile', args)
if w>0 then do; noc=1; end; else noc=0

/* ----- Translate & Compile ----- */
parse source system .
select                             /* system-specific options */
   when system='OS/2' then do
    '@echo off'
    PARSE SOURCE . . this
    CALL SysGetEA this, 'J_PATH', 'j_path'
    if LENGTH( j_path ) < 2 THEN DO
       SAY 'Searching for installed version of JAVA'
       PARSE UPPER VALUE rxFind( 'JAVA.EXE', ' -version', 'OPENJDK VERSION "1.' ) WITH j_path'\BIN'.
       IF LENGTH( j_path ) > 0 THEN
          CALL SysPutEA this, 'J_PATH', j_path
    end
    IF TRANSLATE( RIGHT( j_path, 4 ) ) = '\BIN' THEN
       j_path = LEFT( j_path, LENGTH( j_path ) - 4 )
    CALL SysGetEA this, 'NETRX_PATH', 'netrx_path'
    if LENGTH( netrx_path ) < 2 THEN DO
        SAY 'Searching for installed version of NetRexx'
        PARSE UPPER VALUE rxFind( 'NetRexxC.jar' ) WITH netrx_path'\LIB'.
        IF LENGTH( netrx_path ) > 0 THEN
          CALL SysPutEA this, 'NETRX_PATH', netrx_path
    end
    objID = 'NRXC'
    netrx_name = 'NetRexxKing'
    IF wpsObjectExist( '<WP_'objID'>' ) = 0 THEN
    DO
       setupstring = 'OBJECTID=<WP_'objID'>;EXENAME='this';PARAMETERS=[Type "-run" (without quotes) to run compiled script] %**P\%**F;ASSOCFILTER=*.nrx;ICONFILE='netrx_path'\'netrx_name'.ico;'
       IF SysCreateObject( 'WPProgram', 'NetRexx Compiler / Run', '<WP_DEVFLDR>', setupstring, 'U' ) <> 1 THEN
          CALL SysCreateObject 'WPProgram', 'NetRexx Compiler / Run', '<WP_DESKTOP>', setupstring, 'U'
       CALL rxAddBigIcon netrx_path'\'netrx_name'.png', '<WP_'objID'>'
    END
    PARSE UPPER VALUE this WITH this'\BIN'.
    IF 0 = POS( this'\LIB', TRANSLATE( VALUE( 'PATH',, 'OS2ENVIRONMENT' ) ) ) THEN
       CALL VALUE 'PATH', this'\lib;'VALUE( 'PATH',, 'OS2ENVIRONMENT' ), 'OS2ENVIRONMENT'
    IF 0 = POS( TRANSLATE( j_path )'\BIN', TRANSLATE( VALUE( 'PATH',, 'OS2ENVIRONMENT' ) ) ) THEN
       CALL VALUE 'PATH', '.;'j_path'\bin;'j_path'\lib;'VALUE( 'PATH',, 'OS2ENVIRONMENT' ), 'OS2ENVIRONMENT'
    /* Add option -norestart for OS/2s 1.0.2+ java.exe, for better display */
    'java -version 2>&1|rxqueue'; parse pull . '1.' subv ' '
    PARSE VALUE subv WITH subv'_'.
    javaopts = ''
     
    if subv>=6.0 then CALL VALUE 'CLASSPATH', '.;'this'\lib\NetRexxC.jar;'j_path'\lib\tools.jar', 'ENVIRONMENT'
    else if subv>=4.1 then NOP
    else if subv>=0.2 then javaopts='-norestart'; else if subv <> '' then do; say subv; javaopts='-noasyncgc'; end

      /* Add any options from NETREXX_JAVA environment variable */
    if subv < 4.2 then
    do
        nrjava=value('NETREXX_JAVA',,'ENVIRONMENT')
        if nrjava\='' then javaopts=javaopts nrjava
    end
    else
        javaopts=value('NETREXX_JAVA',,'ENVIRONMENT')
  end
  otherwise
    /* Add any options from NETREXX_JAVA environment variable */
    javaopts=value('NETREXX_JAVA',,'ENVIRONMENT')
  end

do queued(); parse pull .; end
old_trace = TRACE( 'O' )z
'java -version'
'java ' javaopts 'org.netrexx.process.NetRexxC' args
CALL TRACE old_trace

/* ----- Run ----- */
if rc<=1 & run then do
  if noc then say 'Run option ignored as -nocompile specified'
  else do
    /* This section of code is still OS/2-specific */
    do forever /* find the file parameters */
      parse var args file args
      if file='' then leave
      if left(file,1)='-' then iterate
      filename=filespec('n', file); parse var filename fn '.' fe
      /* Now determine the exact case of the class, for java commands */
      file=fn'.class'
      call SysFileTree file, 'foo.', 'FO'
      if foo.0<>1 then do
        if foo.0=0 then say 'Cannot find file:' file
        if foo.0>1 then
          say 'File "'file'" is not a unique specification'
        exit 1;
      end
      file = filespec( 'Name', foo.1 ) /* is now correct case */
      parse var file fn '.' fe
      say 'Running' fn '...'
      'java' fn
    end
  end
end
ELSE
  PARSE PULL
exit rc

rxChk: PROCEDURE
 DO WHILE QUEUED() > 0; PARSE PULL; END;
 org_trace = TRACE( 'O' )
 '@'||ARG(1)||ARG(2)||' 2>>&1 | RXQUEUE'
 CALL TRACE org_trace
 DO WHILE QUEUED() > 0
    IF POS( TRANSLATE( ARG(3) ), TRANSLATE( LINEIN( 'QUEUE:' ) ) ) > 0 THEN
       IF LENGTH( ARG(4) ) > 0 THEN RETURN ARG(4)
 END
RETURN ''
   
rxFind: PROCEDURE EXPOSE !_msg_!.
   PARSE VALUE REVERSE( SysSearchPath( 'PATH', ARG(1) ) ) WITH .'\'fpath
   fpath = REVERSE( fpath )
   IF ARG() > 1 & LENGTH( fpath ) > 0 THEN
      fspec = rxChk( fpath'\'ARG(1), ARG(2), ARG(3), fpath )
   ELSE IF STREAM( fpath'\'ARG(1), 'C', 'QUERY EXISTS' ) <> '' THEN
      fspec = fpath
   ELSE fspec = ''
   IF LENGTH( fspec ) > 0 THEN RETURN fspec
   CALL LINEOUT 'STDERR', VALUE( 'PROGRAMS',,'ENVIRONMENT' )
   CALL SysFileTree VALUE( 'PROGRAMS',,'ENVIRONMENT' )||'\*'||ARG(1), 'file.', 'SFO'
   DO i = 1 TO file.0
      PARSE VALUE REVERSE( file.i ) WITH .'\'fspec
      IF ARG() > 1 THEN
         fspec = rxChk( file.i, ARG(2), ARG(3), REVERSE( fspec ) )
      ELSE
         fspec = REVERSE( fspec )
      IF LENGTH( fspec ) > 0 THEN RETURN fspec
   END
   drives = SysDriveMap( 'C:', 'USED' )
   DO j = 1 TO WORDS( drives )
      CALL LINEOUT 'STDERR', SUBWORD( drives, j, 1 )
      CALL SysFileTree SUBWORD( drives, j, 1 )||'\*'||ARG(1), 'file.', 'SFO'
      DO i = 1 TO file.0
         PARSE VALUE REVERSE( file.i ) WITH .'\'fspec
         IF ARG() > 1 THEN
            fspec = rxChk( file.i, ARG(2), ARG(3), REVERSE( fspec ) )
         ELSE
            fspec = REVERSE( fspec )
         IF LENGTH( fspec ) > 0 THEN RETURN fspec
      END
   END
RETURN ''   
   
rxAddBigIcon: PROCEDURE EXPOSE !_msg_!. java_path
    crlf = D2C(13)D2C(10)
    bigicons_dir = VALUE( 'BIGICONS',, 'ENVIRONMENT' )
    bigicon = FILESPEC( 'N', ARG(1) )
    objid = ARG(2)
    IF LENGTH( bigicons_dir ) > 0 THEN
    DO
        IF STREAM( ( bigicons_dir'\'bigicon ), 'C','QUERY EXISTS') = '' THEN
           IF SysCopyObject( ARG(1), bigicons_dir ) = 0 THEN
              RETURN 1
        IF STREAM( bigicons_dir'\bigicons.txt', 'C', 'QUERY EXIST' ) <> '' THEN
        DO
            f_size = STREAM( bigicons_dir'\bigicons.txt', 'C', 'QUERY SIZE' )
            IF f_size > 0 THEN
            DO
                input = CHARIN( bigicons_dir'\bigicons.txt', 1, f_size )
                CALL STREAM bigicons_dir'\bigicons.txt', 'C', 'CLOSE'
                PARSE UPPER VALUE input WITH pre'"'(bigicon)'"'post
                IF LENGTH( post ) > 0 THEN RETURN 2
                PARSE UPPER VALUE input WITH pre'"'(objid)'"'post
                IF LENGTH( post ) > 0 THEN RETURN 3
                PARSE VALUE input WITH pre'[OBJECTID]'mid(crlf)(crlf)'['post
                input = pre'[OBJECTID]'STRIP( STRIP( mid, 'T', D2C(10) ), 'T', D2C(13) )||crlf||LEFT( '"'objid'"', 28 )'"'bigicon'"'crlf||crlf'['post
                CALL SysFileDelete bigicons_dir'\bigicons.txt'
                CALL CHAROUT bigicons_dir'\bigicons.txt', input
                CALL STREAM bigicons_dir'\bigicons.txt', 'C', 'CLOSE'
            END
            ELSE RETURN 4
        END
    END
RETURN 0

/* Code borrowed from REXX Tips & Tricks v3.60 */
wpsObjectExist: PROCEDURE /* parameter: '<new_wps_object_id>', return: 1 exist, 0 doesn't exist, 43 error */
  PARSE ARG objID
  rc = 43               /* init return/error code 43 = routine not found */
  SIGNAL ON SYNTAX NAME ObjectExistError

  IF SUBSTR( objID, 2, 1 ) <> ":" THEN
      IF LEFT( objID, 1 ) <> "<" & RIGHT( objID, 1 ) <> ">" THEN
          objID = "<" || objID || ">"

  /* create the object and see if it fail */
  tempRC = SysCreateObject( "WPFolder", "TestObject", "<WP_NOWHERE>", "OBJECTID=" || objID || ";", "FAIL" )

  IF tempRC = 1 THEN
  DO
    CALL SysDestroyObject objID
    rc = 0
  END
  ELSE
    rc = 1

ObjectExistError:

RETURN rc

Script has now been modified to support 4OS2 as well.
Sept 18, 2019
« Last Edit: September 18, 2019, 11:35:13 pm by Jan-Erik Lärka »

André Heldoorn

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Re: NetRexx on OS/2
« Reply #3 on: September 15, 2019, 08:53:54 am »
/* This section of code is still OS/2-specific */
do forever /* find the file parameters */
  parse var args file args
  if file='' then leave
  if left(file,1)='-' then iterate
  filename=filespec('n', file); parse var filename fn '.' fe

An usual quality improvement: if this is supposed to be OS/2-specific Rexx code, without overdoing it, then you should support entered valid file name arguments like "C:\NetRexx test\text.txt", or "", or "test file.class, or "C:\CONFIG.SYS", each including the quote(s).

Code: [Select]
/* Unverified, common code to be inserted */
if left(file,1)='"' then do
  args=file args
  parse var args '"' file '"' args
end
« Last Edit: September 15, 2019, 08:56:15 am by André Heldoorn »

Jan-Erik Lärka

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Re: NetRexx on OS/2
« Reply #4 on: September 15, 2019, 09:02:11 am »
That part of the code come from the original NetRexxC.cmd and was left alone as it is/was a design decision by the NetRexx Team.

Code: [Select]
/* Unverified, common code to be inserted */
if left(file,1)='"' then do
  args=file args
  parse var args '"' file '"' args
end

Neil Waldhauer

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Re: NetRexx on OS/2
« Reply #5 on: September 15, 2019, 04:27:22 pm »
The modified NetRexxC.cmd nearly works. It gets through the Java version problem, and only fails for running hello. I only quoted the end of the output to show what is happening. hello.class is on the libpath, path and classpath.

By the way, every time I run NetRexxC, the path gets longer. Paths longer than 1024 bytes overwrite kernel memory, so this should be avoided.

Quote
Program hello.nrx
Compilation of 'hello.nrx' successful
hello.class
Cannot find file: hello.class

So if I need updated NetRexxC.cmd, do I also need some updated NetRexxR.cmd?
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André Heldoorn

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Re: NetRexx on OS/2
« Reply #6 on: September 15, 2019, 06:42:59 pm »
That part of the code come from the original NetRexxC.cmd and was left alone as it is/was a design decision by the NetRexx Team.

If posted as some generic solution or reference here, not by the NetRexx Team but by you, then such a solution or reference is broken too. I'm not using their non-OS/2 software. So I'm not going to report a bug, nor will I fix their broken software for myself. Actually it'll be an old bug in IBM's code.

Please note exactly the same bug applies to quite a few OS/2 Rexx apps, regardless of the author. Hence the sample code.
« Last Edit: September 15, 2019, 06:50:02 pm by André Heldoorn »

André Heldoorn

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Re: NetRexx on OS/2
« Reply #7 on: September 15, 2019, 07:05:57 pm »
So if I need updated NetRexxC.cmd, do I also need some updated NetRexxR.cmd?

Both appear to be worth checking, because it seems to be about as old as IBM Object Rexx for Windows. I can see a few possible updates for my old copy of NetRexxC.cmd, so there are reasons to assume OS/2 wasn't the target OS. No support for valid CLI file name arguments with quote(s) is a sample, and so is the mixed use of both ENVIRONMENT and OS2ENVIRONMENT.

The different package Rexx2Nrx may have an own, possibly conflicting NetRexxC.cmd file name. Which, in my case, is an eCS 1.2-customized version of Rexx2Nrx' original NetRexxC.bat file. Presumably written for Windows, because the file name Externals.bat is a little bit too long for x:\OS2\MDOS\COMMAND.COM.

Jan-Erik Lärka

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Re: NetRexx on OS/2
« Reply #8 on: September 15, 2019, 11:05:10 pm »
Use the program object instead of command line over and over again...
but ok, here's the modification you need.

Code: [Select]
    IF 0 = POS( this'\lib', TRANSLATE( VALUE( 'PATH',, 'OS2ENVIRONMENT' ) ) ) THEN
       CALL VALUE 'PATH', this'\lib;'VALUE( 'PATH',, 'OS2ENVIRONMENT' ), 'OS2ENVIRONMENT'
    IF 0 = POS( TRANSLATE( j_path )'\BIN', TRANSLATE( VALUE( 'PATH',, 'OS2ENVIRONMENT' ) ) ) THEN
       CALL VALUE 'PATH', '.;'j_path'\bin;'j_path'\lib;'VALUE( 'PATH',, 'OS2ENVIRONMENT' ), 'OS2ENVIRONMENT'
[D:\PROGRAMS\NETREXX\BIN]netrexxc hello.nrx -run
openjdk version "1.6.0_27"
OpenJDK Runtime Environment (build 1.6.0_27-b01-GA5)
OpenJDK Client VM (build 20.0-b12, mixed mode)
NetRexx portable processor 3.08-GA build 1,582-20190906-1850
Copyright (c) RexxLA, 2011,2019.   All rights reserved.
Parts Copyright (c) IBM Corporation, 1995,2008.
Program hello.nrx
Compilation of 'hello.nrx' successful
Running hello ...
hello

The modified NetRexxC.cmd nearly works. It gets through the Java version problem, and only fails for running hello. I only quoted the end of the output to show what is happening. hello.class is on the libpath, path and classpath.

By the way, every time I run NetRexxC, the path gets longer. Paths longer than 1024 bytes overwrite kernel memory, so this should be avoided.

Quote
Program hello.nrx
Compilation of 'hello.nrx' successful
hello.class
Cannot find file: hello.class

So if I need updated NetRexxC.cmd, do I also need some updated NetRexxR.cmd?

You distribute the runtime libarary NetRexxR.jar with your application.
It's possible to write a NetRexxR.cmd, but the users should run your app as any other java application.
« Last Edit: September 15, 2019, 11:19:48 pm by Jan-Erik Lärka »

Neil Waldhauer

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Re: NetRexx on OS/2
« Reply #9 on: September 16, 2019, 04:29:29 am »
That doesn't seem to help enough.

Quote
[k:\programs\netrexx3\lib] ..\bin\netrexxc2 -run hello
openjdk version "1.6.0_27"
OpenJDK Runtime Environment (build 1.6.0_27-b01-GA5)
OpenJDK Client VM (build 20.0-b12, mixed mode)
NetRexx portable processor 3.08-GA build 1,582-20190906-1850
Copyright (c) RexxLA, 2011,2019.   All rights reserved.
Parts Copyright (c) IBM Corporation, 1995,2008.
Program hello.nrx
Compilation of 'hello.nrx' successful
hello.class
Cannot find file: hello.class
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André Heldoorn

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Re: NetRexx on OS/2
« Reply #10 on: September 16, 2019, 10:28:25 am »
but ok, here's the modification you need.

That modification is broken too, but since you don't seem to listen I cannot be arsed to point out yet another improvement.

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Re: NetRexx on OS/2
« Reply #11 on: September 16, 2019, 10:44:29 am »
Here the link points to a BETA; not to 3.0.8 GA. FWIW.

Neil Waldhauer

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Re: NetRexx on OS/2
« Reply #12 on: September 16, 2019, 03:47:15 pm »
The problem is that the NetRexxC.cmd does not set classpath correctly. I'm not going to patch an increasingly bad REXX program, but rather I'll try to construct a useful one for the present day, that does not necessarily run original Java 1.1-based NetRexx from the 1990's.
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Jan-Erik Lärka

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Re: NetRexx on OS/2
« Reply #13 on: September 16, 2019, 05:57:17 pm »
Here ite set the class path to
Code: [Select]
.;D:\PROGRAMS\NETREXX\lib\NetRexxC.jar;D:\PROGRAMS\OPENJDK\lib\tools.jarautomatically as seen with
Code: [Select]
      CALL TRACE 'I'
    if subv>=6.0 then CALL VALUE 'CLASSPATH', '.;'this'\lib\NetRexxC.jar;'j_path'\lib\tools.jar', 'ENVIRONMENT'

What do you get?

Just add CALL TRACE 'I' right before the line and look for then output.

The problem is that the NetRexxC.cmd does not set classpath correctly. I'm not going to patch an increasingly bad REXX program, but rather I'll try to construct a useful one for the present day, that does not necessarily run original Java 1.1-based NetRexx from the 1990's.

//Jan-Erik
« Last Edit: September 16, 2019, 05:59:17 pm by Jan-Erik Lärka »

Neil Waldhauer

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Re: NetRexx on OS/2
« Reply #14 on: September 17, 2019, 05:03:53 am »
It seems to set classpath correctly, but then abandons it's work because it can't find hello.class.

Dir /N /B might work in CMD, but it's not useful with 4os2. Rexx has a lot of other ways to find filenames that don't depend on the exact syntax of CMD.

The script does work on CMD.
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