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Rexx on z/OS: The Modern Mainframe Automation Handbook: Practical Scripting for TSO, ISPF, JCL, and z/OS UNIX
Paperback
Publisher: Independently Published
Published: Nov 13 2025
Pages: 158
Weight: 0.63
Height: 0.34 Width: 7.00 Depth: 10.00
Language: English
How many times have you found yourself doing the same, repetitive TSO tasks? How much time do you waste checking job status in SDSF? What if you could write a single script that could build JCL, submit it, wait for it to finish, and then display a Success or Failure message on a custom-built ISPF panel?
Rexx on z/OS is a practical, project-based guide that teaches you the most valuable automation skill on the platform. Forget dry, academic theory; this book is built on a learn by doing approach that starts with your first script and ends with you building a complete, interactive ISPF application.
This book cuts through the complexity of the mainframe (TSO, JCL, ISPF, and z/OS UNIX) and shows you how to glue them all together with the simple, powerful Rexx language.
In this book, you will learn to:
Master the Fundamentals: Understand the everything is a string philosophy and learn to deconstruct any data with the powerful PARSE instruction.
Automate TSO & JES: Write scripts that issue TSO commands, trap their output, and check the RC . Learn to submit JCL and monitor job status, waiting for the MAXCC .
Control All Your Data: Read and write MVS datasets (PS/PDS) with EXECIO and, for the first time, read and write z/OS UNIX (zFS) files using shell commands.
Build Professional UIs: Stop writing command-line tools. Learn to design, DISPLAY, and manage interactive ISPF panels, validating user input like a pro .
Write Bulletproof Code: Use the TRACE command to find bugs in seconds and SIGNAL to build robust error-handling routines that never crash.
Build a Complete Tool: The capstone project guides you, step-by-step, in building a real Job Status Monitor application, combining all the skills you've learned .
Whether you are a new systems programmer, a COBOL developer looking to modernize, or an operations analyst tired of repetitive tasks, this book is the key to unlocking true automation.
Become the automation expert your team relies on.
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