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Course Catalog » REXX Curriculum » REXX Series

REXX Built-In Functions

6 hours



The REXX Built-In Functions course describes the standard built-in functions that are available with REXX.


Personnel requiring an introduction to REXX and an understanding of the fundamentals of programming in REXX.


Basic understanding of data processing concepts, some basic programming skills and completion of the Introduction to REXX and REXX Keywords Instructions courses or equivalent knowledge.


After completing this course the student should be able to:

  • Describe and use REXX Built-In Functions
  • Identify and use String Functions
  • Identify and use Text and Word Functions
  • Identify and use Numeric, Justification and Conversion Functions
  • Identify and use Environmental Functions
  • Identify and use File Processing Functions

Course Content

String Functions

Coding and Using REXX Built-In Functions

Manipulating Strings with Functions

Locating and Comparing Data in Strings

Text and Word Functions

Using Text Functions

Using Word Functions

Numeric, Justification and Conversion Functions

Using Numeric Functions

Using Justification Functions

Using Conversion Functions

REXX Environment Functions

Using Miscellaneous Environmental Functions

Using Environmental Functions in Error routines

Using System Environmental Functions

File Processing Functions

Using Steaming Functions

Reading and Writing by Characters

Reading and Writing by Lines

REXX Built-In Functions Mastery Test

Course Catalog » REXX Curriculum » REXX Series
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