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There are many excellent free Rexx tutorials available --
Classic Rexx--
Rexx: A Quick Rexx Tutorial from H. Fosdick
Wikipedia’s description of the language and summary
Rexx introduction from Rexx/imc
Tutorial from Kyla Computing Ltd.
Tutorial from Rexx/imc
Tutorial and language reference from Kilowatt Software
Tutorial & reference for Reginald REXX for Windows
Tutorial and introduction from Vladimir Zabrodsky
Advanced REXX Course from IBM (Guy De Ceulaer and Kris Buelens)
Walk with a Dinosaur -- the Journey fro VM/CMS to a PC with Rexx, from Les Koehler
supplemental ZIP file
Introduction to Rexx Workshop (for VM) from Univ Conn. by Rick Ellis
SHARE’s Rexx Tutorial from 1997
Introduction to REXX/VSE (PDF file) from Bernd Dowedeit from IBM
Introduction to Rexx for AS/400 from Vladimir Zabrodsky
REXX for CICS from Rich Smrcina
OS/2 REXX - unique aspects, from American Programmer
ARexx tutorials and code samples from Amiga University
Rexx for Android and iOS
Tutorial -- How to Run Rexx on Linux
How to Run Rexx on Your Mac
Tutorial -- What are Regular Expressions? How do you use them in Rexx?
How to Write Portable Rexx Code, a DOC file
Compare 3 ways to write the same script -- a script that displays the largest files on your
Windows PC so you can delete any you choose to reclaim space. 3 tutorial articles--
“Reclaim Gigabytes using a Rexx Script” --Classic procedural Rexx (uses Regina) (PDF file)
“Reclaim Gigabytes using a Recursive Rexx Script” -- Procedural Reginald REXX (PDF file)
“Reclaim Gigabytes using an Open Object Rexx Script” --Open Object Rexx
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Object-oriented Rexx tutorials --
Brief summary of object-oriented Rexx scripting from Open Object Rexx project
OORexx Product Brochure, PDF file from the Open Object Rexx team
What’s Up with Object Rexx?, a one-page overview by H. Fosdick
Resurrecting Rexx, Introducing Object Rexx, a PDF file, from Rony Flatscher
The Programming Guide for Open Object Rexx is highly readable, from the OORexx Team
Tutorial-- from Classic to Object Rexx, PDF file by Rony Flatscher
Object-oriented Rexx scripting tutorial and language summary from Kilowatt Software
roo! object-oriented programming presentation from Kilowatt Software
Introduction to Object Rexx, a PDF file presentation from Prof. Rony Flatscher
Rexx Objects, Part Deux, PDF file presentation from Rick McGuire
supplemental ZIP file
ooRexx Group Therapy: Overcoming Fear of Objects, PDF file from Rick McGuire
Rexx Objects: Dipping a Toe into the Object Pool, PDF file from Rick McGuire
Rexx Programmer’s Reference includes an object scripting tutorial.
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NetRexx tutorials --
NetRexx Introduction, a PDF presentation from Michael Cowlishaw. 49 slides.
NetRexx Quick Start page at IBM (includes many links for example code, etc).
NetRexx Tutorial, a PDF presentation by Thomas Schneider. 41 slides.
NetRexx Hands-on Lab (for VM & VSE), a PDF presentation from Casey & Morse, IBM
NetRexx Language Overview and Quick Start PDF manual from Michael Cowlishaw.
NetRexx at Once: Quick Guide for Java Developers by Leonardo Boselli
NetRexx Programming for the JVM, by Nick Hightower, in Java Developer’s Journal
Kednos’ NetRexx on OpenVMS page
Additionally--
Most Rexx interpreters download with bundled learning materials and sample scripts.
Read the articles below for more about Rexx and some more code walk-throughs.
Download sample scripts written for illustrative purposes.
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Here are introductory articles. Experienced developers should go to the Reference and How-To’s sections below.
"Power through Simplicity" explains how power is achieved in Rexx -- a language that “looks”
simple -- and the advantages to this approach to power programming over languages that “look”
powerful.
This tutorial presentation introduces all aspects of Rexx, including varieties, uses, language
structure, and a walk-through of several example scripts. 61 slides, Powerpoint, distributed under
the Open Publication License.
“Rexx World,” a quick overview of the whole Rexx universe.
“The Power Of Associative Arrays” in Dr. Dobb’s Journal describes how associative arrays solve problems.
“Free Rexx Runs Everywhere!” describes the free Rexx interpreters and their uses.
“Using Rexx for Easy Linux Desktop Scripting” describes Rexx for Linux users.
“Rexx for Everyone” describes the advantages to free Rexx and gives you a feel for the language, by David Mertz.
“Back to the Future with Rexx,” a quick language introduction for Windows users.
“Whatever Happened to Rexx?” an overview for Windows users.
“Rexx: A Quick Overview” describes the three Rexx varieties and how they are used--
classic procedural Rexx, object-oriented Rexx, and Java-compatible NetRexx.
“REXX Concepts and Applications,” an intro to Rexx for OS/TSO by Bruce Woodworth.
“Interview with Michael Cowlishaw” (inventor of Rexx, a PDF file).
“Fast Programming with Rexx,” article with 3 progressive Rexx scripts.
“What Ever Happened to OS/2 and OS/2 Rexx?” get the whole story in this DOC file.
“What Ever Happened to the AmigaOS and ARexx?” get the story in this DOC file.
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These resources give you a completely online Rexx language reference (also see the Manuals and How-to’s sections below) --
Classic Rexx--
Wikipedia’s Rexx page
Tutorial and full language reference from Kilowatt Software
Instructions reference from Kilowatt Software
Functions reference from Kilowatt Software
Syntax summary quick reference from Kilowatt Software
Tutorial and full language reference from Kyla Computing Ltd.
Language reference summary from Rexx/imc
Rexx FAQs from Mindspring
Rexx language home page at IBM
VM Rexx language syntax reference from Rick Swain
Rexx Style Guide for TSO-REXX from Neil Hancock
TSO Rexx FAQs from Neil Hancock
VSE home page (includes Rexx) from IBM
Rexx manuals and how-tos for all IBM platforms from The American Programmer
Rexx versus Clist comparison from The American Programmer
TSO and ISPF manuals from IBM from The American Programmer
Index page for mainframe Rexx information from The American Programmer
Many Rexx resources on the Open Project Directory from DMOZ
Rexx for CICS home page from IBM
ANSI 1996 Rexx standard, PDF file (pre-publication final draft)
Stream I/O for TSO/E REXX PDF file manual from IBM
i5/OS V5R2 Information Center online (includes Rexx topics) from IBM
AS/400 rexx command parameters from IBM
ARexx reference materials from Amiga University
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Object-oriented Rexx reference --
Documentation home page for Open Object Rexx from the Open Object Rexx Project
Open Object Rexx-- List of classes and methods, from H. Fosdick
roo! -- Kilowatt Software homepage
D-Bus Language Bindings for ooRexx, PDF file, from Prof. Rony Flatscher
The 2011 Edition of BSF4ooRexx, PDF file, from Prof. Rony Flatscher
The CSVStreamClass, PDF file, from Jon (Sahananda) Wolfers
ooRexx 4.0.0: What’s New?, PDF file, from Gil Barmwater
ooRexx 3.2: New Features, PDF file from Rick McGuire
Wikipedia’s page on Object Rexx
NetRexx reference --
NetRexx home page at IBM
NetRexx 2, updated 2009, PDF file, by Michael Cowlishaw -- the book that defines NetRexx.
Creating Java Applications Using NetRexx redbook from IBM
NetRexxD documentation package (download ZIP file) from IBM
Using REXX and the Netview command list language, a PDF file, IBM publication
Programming: REXX and Netview command list language, IBM publication
Eclipse Plug-in for NetRexx
Wikipedia’s page on NetRexx
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This section gives you fast, direct online access to all Rexx product manuals--
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Classic Rexx --
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IBM Rexx Manuals --
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Download page for all ooRexx manuals here.
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All NetRexx manuals from IBM (all are PDF files) --
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NetRexx 2, updated 2009, PDF file, by Michael Cowlishaw -- the book that defines NetRexx (free download).
The NetRexx Library, IBM’s list of their NetRexx docs (with links)
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This section offers resources that tell how to perform particular tasks --
Classic Rexx--
The Power of Rexx Associative Arrays, by Howard Fosdick and Les Koehler
Cross-Platform TCP/IP Socket Programming in Rexx, PDF file and zipped sample code from Bob Stark
How to do Parsing in Rexx, PDF file from Chip Davis
Rexx/DW: Lightweight Cross-platform GUI Toolkit PDF file from Mark Hessling
Intro to DB2 UDB Programming Using Rexx, PDF file and zipped sample code from Bob Stark
How to script DB2 UDB with Rexx, from Howard Fosdick
How to scripts DB2 UDB with Rexx Part II, from Howard Fosdick
How to write CGI scripts with Rexx from SLAC
Sample Rexx Code for GTK server using named pipes
The Generic Call Interface (GCI) PDF file from Florian GroBe-Coosmann
Download code examples for the above presentation ZIP file from Florian GroBe-Coosmann
The Reginald REXX web site has many “how-to’s” for Windows users on topics like
programming GUIs, the MIDI interface, speech, ODBC, CGI, RexxSock, Internet
access, mailslots, transcendental math, RxZip, RxUnzip, and other topics.
Extending the High Level Tracability of Rexx from Leslie Koehler
Find many good presentations from the Rexx Language Association’s Annual Symposium
for 2011, 2010, 2009, 2008, 2007, 2006, 2005, 2004
Reading and Writing Data using EXECIO on OS/390 and z/OS from Lionel Dyck
Hard to do in Java, Easy to do in Rexx, PDF file from Rene Jansen
Using the Rexx Compiler, PDF file from George Fulk
REXXpertise Blog, mainframe REXX tips, by Frank Clarke
Many mainframe Rexx “how-to’s”, tutorials, & manuals from The American Programmer
How to write TSO/ISPF edit macros with Rexx from The American Programmer
Many short mainframe Rexx “How-To’s” from The American Programmer
NaSPA has Rexx articles online but requires a subscription (Network & Systems Professionals Association)
TSO Times magazine has many TSO-REXX, editor, ISPF articles (no subscription required)
The Mainframe Zone has some REXX and TSO/ISPF articles
ISPF Application Technique with REXX, PDF file from Frank Clarke
Rexx Anywhere (a Portability “How-to”) from Dave’s MVS Page
Six coding rules of thumb (for VM) from Univ Illinois
Rexx on the MAC -- 2007 Update, PDF file from Rene Jansen
Rexx Tips and Tricks (for OS/2 and DOS), HTML, version 2.80, by Peter Childs
Rexx Tips and Tricks (for OS/2 and DOS), info and download file, version 3.6
OS/2 Rexx articles at the new EDM/2 magazine web site
Rexx for Android and iOS
Rexx for Android, PDF file, from Pierre G. Richard, Jaxo Systems
64 Bit Rexx
How to Write Portable Rexx Code, a DOC file
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Object-oriented Rexx how-to’s --
Automating Microsoft Excel with ooRexx & ActiveX, PDF & zipped sample programs from Lee Peedin
Creating Professional Documents w/ ooRexx & the Printer Object, PDF file, sample scripts by L. Peedin
BSF4Rexx: Camouflaging Java, PDF file from Prof. Rony Flatscher, presented at ApacheCon Asia 2006
Code from that presentation (ZIP file) here
Employing Rexx as a Scripting Language for Java from Prof. Rony Flatscher
How to automate Windows applications using ooRexx, PDF file from Florian Helmecke
Examples of Open Office automation with ooRexx & BSF, PDF file from Walter Augustin
More Open Office examples using ooRexx, PDF file from Andreas Ahammer
Open Office Automisation with ooRexx, PDF file from Martin Burger
Automating source control version system “Subversion” w/ ooRexx, PDF file from B. Hoisl
log4rexx -- A log4j-Comparable Logging Framework for ooRexx Applications, from Prof. Rony Flatscher
supplementary article and ZIP file
Camouflaging Java as Object Rexx PDF file from Prof. Rony Flatscher
Bean Scripting Framework for Rexx, a web directory containing how-to’s, sample code,
tools and documentation, from Prof. Rony Flatscher
Object Rexx and Windows Automation Interfaces PDF file from Prof. Rony Flatscher
Download code examples for the above presentation ZIP file from Prof. Rony Flatscher
Symposium papers and lecture notes web directory with how-to’s, sample code, and
documentation on Object Rexx from Prof. Rony Flatscher
Concurrency with Object Rexx PDF file from Lavrentios Servissoglou
Download code examples for the above presentation ZIP file from Lavrentios Servissoglou
Object REXX GTK+ Object Manager PDF file from W. David Ashley
Using Procedural Rexx/SQL as an OORexx Object, PDF file from Lee Peedin
supplemental ZIP file
DATARGF: from Rexx to Java to Object Rexx PDF file from Michael Warmuth
How to automate Excel with ooRexx -- and other ooRexx How-to’s by Lee Peedin
WSH Objects and Object Rexx, by Brian Knittel
AJAX Tutorial with server-side Object Rexx, by David Ruggles
TeRA - A TestRunner Application for ooRexxUnit, PDF file presentation from Prof. Rony Flatscher
supplemental ZIP file.
How to Use Rexx and ooRexx from within their Java-based Sibling NetRexx, PDF file from Prof. Rony Flatscher
21st Century RexxTry: ooRexxTry.rex, PDF file from Lee Peedin. Download the tool here.
Programming Internet Protocols in ooRexx, PDF file from W. David Ashley
The ooRexx 4.x API’s and Creating Extension Classes in C++, PDF file from W. David Ashley
Starting OO Design, PDF file from Gil Barmwater
64 Bit Rexx
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NetRexx how-to’s --
IBM NetRexx Resources page
Classic REXX to NetRexx Converter, from Thomas Schneider
VM/ESA Network Computing with Java and NetRexx, a redbook from IBM
NetRexx Hands-on Lab, PDF file, C. Casey & C. Morse, IBM
Doing GUI Programming with NetRexx on VM/ESA, PDF file, C. Morse, IBM
NetRexx on Big Iron, PDF file, Rene Jansen
Alternative Language Compilers for NetRexx, PDF file, Rene Jansen
NetRexx Development on Android, Kermit Kiser
Building NetRexx Systems, PDF file, Rene Jansen (different ways & tools to build NetRexx applications).
Debugging JDBC Connections Using NetRexx, PDF file, Robert Wilson
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These selections offer “best practices” and style hints and tips for Rexx coding --
Rexx Rules of Thumb, from Howard Fosdick
Rexx Style Guide for TSO-REXX from Neil Hancock
Six coding rules of thumb for VM from Univ Illinois
Rexx Tips and Tricks (for OS/2 and DOS), version 2.80, by Peter Childs
Common Rexx Errors from David Martin
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Classic, procedural Rexx has two major standards, ANSI-1996 and the older TRL-2--
Rexx 1996 ANSI Standard (pre-pub version for final approval)
Complete Rexx 1996 ANSI standards information and ordering page
Differences between the ANSI-1996 and TRL-2 standards, from H. Fosdick
Functions-- Standard vs non-standard, from H. Fosdick
Brief History of the Rexx Standard, from Brian Marks
Object Rexx has no equivalent standard, but here is what is included in Open Object Rexx--
Open Object Rexx-- List of classes and methods, from H. Fosdick
Go to the section with full Open Object Rexx documentation
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Rexx is an excellent language for writing portable code, programs that run on various platforms. Even highly portable languages, however, face certain system-dependent issues. These selections address advanced portability issues--
How to Write Portable Rexx Code, a DOC file
Use RexxUtil to Write Portable Rexx Code, a DOC file (Note that RegUtil is basically the same as RexxUtil).
Platform-specific Settings-- Default Command Environments & parse source system Strings, H. Fosdick
Rexx Anywhere (a Portability “How-to”) from Dave’s MVS Page
Thoughts On Rexx Portability from Steve Ferg
“Writing Portable Rexx,” chapter 13 in Rexx Programmer’s Reference
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