Introduction to CMS Pipelines

Overview
This 1 day course is designed to introduce the delegates to the use of CMS Pipelines. With more recent versions of VM these have replaced EXECIO as the standard method of I/O when writing REXX programs. This course gives students an introduction to CMS Pipelines and includes many hands on exercises and can be given to existing REXX programmers or taught as part of the Introduction to REXX class.

Pre-requisites
Experience of coding in REXX or completion of the introductory REXX class.

Audience
Staff who would like to automate repetitive tasks on VM and wish to read and write files in CMS.

Student Numbers
The maximum recommended student to instructor ratio is 12:1

Objectives
By the end of the course, the delegates will be able, with the aid of course notes to:

• Code REXX Execs using CMS Pipelines.

• Identify the correct stage driver to use for processing information.

• Use CMS Pipelines from the CMS Command line

• Create new files and append to existing files.

 

Course Outline

Introduction	Overview of the Course
CMS Pipelines	Device Drives Return Codes
Reading data into Pipelines	Reading in Files Reading Variables CP Commands CMS Commands Literals Stems Reader
Passing data from Pipelines	Writing New Files Appending to Files Writing Variables Console Stems Hole
Filter Stages in Pipelines	ALL APPEND CHANGE CHOP COUNT DROP DUPLICATE FIND FRLABEL JOIN LOCATE NFIND NLOCATE PAD PICK SORT SPECS SPLIT STRIP TAKE TOLABEL UNIQUE XLATE
Multistream Pipelines	Using Labels FANOUT FANINANY FANIN WRITING STAGES

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