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There are many excellent free Rexx tutorials on the web --
Here are a pair of easy articles to get you started. The first tells you about Rexx, the second is a
language tutorial--
“Rexx-- What You Need to Know”
“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
Downloadable interactive book tutorial & reference for Windows from Reginald REXX
Tutorial from Elliot Spencer
Tutorial and introduction from Vladimir Zabrodsky
Tutorial for scripting handhelds running the Palm OS from Jaxo Inc.
Introduction to Rexx Workshop (for VM) from Univ Conn. by Rick Ellis
Introduction to Rexx for OS/390 from Lionel Dyck
Introduction to REXX/VSE (PDF file) from Bernd Dowedeit from IBM
Introduction to Rexx for AS/400 (PDF file) from Vladimir Zabrodsky
REXX for CICS (PDF file) from Rich Smrcina
OS/2 REXX - unique aspects, from American Programmer
ARexx tutorials and code samples from Amiga University
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)
“Reclaim Gigabytes using a Recursive Rexx Script” -- Procedural Reginald REXX.
“Reclaim Gigabytes using an Open Object Rexx Script” --Open Object Rexx
Object-oriented Rexx--
Brief summary of object-oriented Rexx scripting from Open Object Rexx project
What’s Up with Object Rexx?, a one-page overview by H. Fosdick
Resurrecting Rexx, Introducing Object Rexx, (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 and zipped example programs 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 Programmer’s Reference includes an object scripting tutorial.
NetRexx--
NetRexx Introduction, a PDF presentation from Michael Cowlishaw. 49 slides.
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 (downloadable ZIP file) by Leonardo Boselli
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” 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.
“Back to the Future with Rexx,” a quick language introduction for Windows users.
“Whatever Happened to Rexx?” an overview for Windows users.
“Rexx Today,” an overview for OS/2 and eCS 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.
“Job Streams “to go” Using REXX/VSE,” PDF file from Linda Dockstader.
“All Hail King NetRexx!” is a good overview of NetRexx, and how and why you would use it.
“Interview with Michael Cowlishaw” (inventor of Rexx, a PDF file).
“Fast Programming with Rexx,” article with 3 progressive Rexx scripts.
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This section gives you fast, direct online access to all Rexx product 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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This section offers resources that tell how to perform particular tasks --
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 write database scripts with Rexx, a two-part article from Howard Fosdick.
How to script DB2 UDB with Rexx, 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.
How to write Rexxlets (scripting Rexx under Palm OS) from Jaxo Inc.
Extending the High Level Tracability of Rexx from Leslie Koehler
Find many good presentations from the Rexx Language Association’s Annual Symposium
2007 (requires membership), free to all -> 2006, 2005, 2004
Reading and Writing Data using EXECIO on OS/390 and z/OS from Lionel Dyck
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
Technical Support magazine’s 3-part article on REXX/370 Compiler, etc. (NaSPA members only)
TSO Times magazine has many TSO-REXX, editor, ISPF articles (no subscription required)
TSO/ISPF Update magazine has articles, from Xephon (subscription required)
Rexx Anywhere (a Portability “How-to”) from Dave’s MVS Page
Six coding rules of thumb (for VM) from Univ Illinois
Rexx Tips and Tricks (for OS/2 and DOS), HTML, version 2.80, from Bernd Schemmer
Rexx Tips and Tricks (for OS/2 and DOS), download INF file, version 3.60, from Bernd Schemmer
OS/2 Rexx articles at the new EDM/2 magazine web site
Rexx Tips and Techniques from Quercus
How to Do It in OS/2 REXX from Steve Grim and Quercus
Object-oriented Rexx--
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
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
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
NetRexx--
Using NetRexx for Java Servlets from David Barnes (search for “Barnes” on the web page)
How to Install NetRexx on OS390 from IBM
Which JDK to use with NetRexx, from Brian Marks
Using the NetRexx Compiler under z/VM and VM/ESA from IBM
VM/ESA Network Computing with Java and NetRexx, a presentation from Steve Record
VM/ESA Network Computing with Java and NetRexx, a redbook from IBM
VM NetRexx Hints and Tips home page from IBM
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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), HTML, version 2.80, from Bernd Schemmer
Rexx Tips and Tricks (for OS/2 and DOS), download INF file, version 3.60, from Bernd Schemmer
Rexx Pitfalls from the Quercus Group
Common Rexx Errors from David Martin
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Classic, procedural Rexx has two major standards, ANSI-1996 and the older TRL-2--
ANSI 1996 Rexx standard, PDF file (pre-publication final draft)
Differences between the ANSI-1996 and TRL-2 standards, from H. Fosdick
Functions-- Standard vs non-standard, from H. Fosdick
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
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--
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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