REXX Programming on z/OS: Automating the Mainframe

Learn to write and execute REXX scripts on IBM z/OS to automate tasks, improve productivity, and integrate with TSO/ISPF and JCL environments.

Course Objectives

• Understand the syntax and structure of REXX on the mainframe.
• Write REXX scripts for TSO commands, dataset management, and utilities.
• Integrate REXX with ISPF panels and CLISTs.
• Debug and optimize REXX programs using trace tools and return codes.
• Automate repetitive tasks and streamline operations for system programmers and developers.

Course Overview

This course introduces the REXX programming language in the context of IBM’s z/OS environment. Widely used for scripting and automation, REXX helps mainframe professionals interact with system components more efficiently. Participants will develop hands-on experience writing REXX programs that execute TSO commands, access datasets, generate reports, and extend ISPF functionality. A must-have skillset for mainframe developers, administrators, and support teams.

Sample Module: REXX Language Basics

This module introduces the core syntax of REXX: variables, expressions, loops, and conditionals. Learners will write simple programs to display messages and perform string operations.

Lesson: Automating Dataset Cleanup with REXX

In this lesson, participants will create a REXX script to identify and delete temporary datasets that meet specified naming patterns—reducing manual overhead for system maintenance.