IBM TSO/E REXX Manuals

Manuals and User Guides for IBM TSO/E REXX. We have 1 IBM TSO/E REXX manual available for free PDF download: User Manual

IBM TSO/E REXX User Manual (242 pages)

Brand: IBM | Category: Computer Hardware | Size: 1.11 MB

Table of Contents

5
- Figures
  11
- Tables
  13
- About this Book
  15
- How this Book Is Organized
  15
  - Terminology
    15
  - Purpose of each Chapter
    16
  - Examples
    16
  - Exercises
    16
- Who Should Use this Book
  15
- Where to Find more Information
  16
  - Accessing Licensed Books on the Web
    16
  - Using Lookat to Look up Message Explanations
    17
- Part 1. Learning the REXX Language
  19
Chapter 1. Introduction

21
- Features of REXX
  21
  - Ease of Use
    21
  - Free Format
    21
  - Convenient Built-In Functions
    22
  - Debugging Capabilities
    22
  - Interpreted Language
    22
  - Extensive Parsing Capabilities
    22
- What Is REXX
  21
- Components of REXX
  22
- The SAA Solution
  22
- Benefits of Using a Compiler
  23
Chapter 2. Writing and Running a Rexx Exec

25
- Before You Begin
  25
- What Is a REXX Exec
  26
- Syntax of REXX Instructions
  27
  - The Character Type of REXX Instructions
    27
    
    Using Quotation Marks in an Instruction
    27
  - The Format of REXX Instructions
    28
    
    Beginning an Instruction
    28
    
    Continuing an Instruction
    28
    
    Continuing a Literal String Without Adding a Space
    29
    
    Ending an Instruction
    29
  - Types of REXX Instructions
    30
    
    Assignment
    31
    
    Keyword
    31
- Execs Using Double-Byte Character Set Names
  32
  - Label
    32
    
    Command
    32
    
    Null
    32
- Running an Exec
  34
  - Running an Exec Explicitly
    34
  - Running an Exec Implicitly
    35
    
    Allocating a PDS to a System File
    35
    
    Exercises - Running the Example Execs
    36
- Interpreting Error Messages
  37
- Preventing Translation to Uppercase
  38
  - From Within an Exec
    38
  - As Input to an Exec
    38
- Passing Information to an Exec
  39
Chapter 3. Using Variables and Expressions

43
- Using Variables
  43
  - Variable Names
    44
  - Variable Values
    45
  - Exercises - Identifying Valid Variable Names
    45
- Using Expressions
  46
  - Arithmetic Operators
    46
    
    Division
    47
    
    Order of Evaluation
    47
  - Comparison Operators
    48
    
    Exercises - Calculating Arithmetic Expressions
    48
    
    Using Arithmetic Expressions
    48
    
    The Strictly Equal and Equal Operators
    49
    
    Using Comparison Expressions
    49
  - Logical (Boolean) Operators
    50
    
    Exercises - Using Comparison Expressions
    50
    
    Using Logical Expressions
    51
  - Concatenation Operators
    52
    
    Exercises - Using Logical Expressions
    52
    
    Using Concatenation Operators
    52
  - Priority of Operators
    53
    
    Exercises - Priority of Operators
    54
- Tracing Expressions with the TRACE Instruction
  55
  - Tracing Operations
    55
  - Tracing Results
    56
    
    Exercises - Using the TRACE Instruction
    56
Chapter 4. Controlling the Flow Within an Exec

59
- Using Conditional Instructions
  60
- Using Looping Instructions
  65
  - Repetitive Loops
    65
  - Infinite Loops
    66
  - DO FOREVER Loops
    67
  - ITERATE Instruction
    68
  - LEAVE Instruction
    68
  - Exercises - Using Loops
    69
  - Conditional Loops
    70
  - DO WHILE Loops
    70
  - DO until Loops
    71
  - Exercise - Using a DO WHILE Loop
    71
  - Exercise - Using a DO until Loop
    72
  - Combining Types of Loops
    73
  - Nested DO Loops
    73
- Using Interrupt Instructions
  74
  - Exercises - Combining Loops
    74
  - CALL/RETURN Instructions
    75
  - EXIT Instruction
    75
  - SIGNAL Instruction
    76
- Chapter 5. Using Functions
  
  79
  - What Is a Function
    79
    
    Example of a Function
    80
  - Built-In Functions
    81
    
    Arithmetic Functions
    81
    
    Comparison Functions
    81
    
    Conversion Functions
    82
    
    Formatting Functions
    82
    
    String Manipulating Functions
    82
    
    Miscellaneous Functions
    83
    
    Testing Input with Built-In Functions
    84
Chapter 6. Writing Subroutines and Functions

87
Chapter 7. Manipulating Data

103
- Using Compound Variables and Stems
  103
  - What Is a Compound Variable
    103
  - Using Stems
    104
- Parsing Data
  105
  - Exercises - Using Compound Variables and Stems
    105
  - Instructions that Parse
    106
    
    ARG Instruction
    106
    
    PULL Instruction
    106
  - Ways of Parsing
    107
    
    Blank
    107
    
    Parse Value
    107
    
    PARSE VAR Instruction
    107
    
    Number
    108
    
    String
    108
    
    Variable
    108
  - Parsing Multiple Strings as Arguments
    110
    
    Exercise - Practice with Parsing
    110
- Part 2. Using REXX
  113
Chapter 8. Entering Commands from an Exec

115
Chapter 9. Diagnosing Problems Within an Exec

129
- Debugging Execs
  129
  - Tracing Commands with the TRACE Instruction
    129
    
    Trace C
    129
  - Using REXX Special Variables RC and SIGL
    130
    
    Trace E
    130
  - Tracing with the Interactive Debug Facility
    131
  - Sigl
    131
    
    Starting Interactive Tracing
    132
    
    Ending Interactive Trace
    134
    
    Options Within Interactive Trace
    134
Chapter 10. Using Tso/E External Functions

137
- TSO/E External Functions
  137
  - Using the GETMSG Function
    138
  - Using the LISTDSI Function
    138
  - Using the MSG Function
    140
  - Using the MVSVAR Function
    141
  - Using the OUTTRAP Function
    141
  - Using the PROMPT Function
    142
  - Using the SETLANG Function
    143
  - Using the STORAGE Function
    144
  - Using the SYSCPUS Function
    144
  - Using the SYSDSN Function
    144
  - Using the SYSVAR Function
    145
    
    Exec Information
    146
    
    Language Information
    146
    
    System Information
    146
    
    Terminal Information
    146
    
    User Information
    146
    
    Console Session Information
    147
- Additional Examples
  148
- Function Packages
  151
  - Search Order for Functions
    152
Chapter 11. Storing Information in the Data Stack

153
Chapter 12. Processing Data and Input/Output Processing

171
- Dynamic Modification of a Single REXX Expression
  171
  - Using the INTERPRET Instruction
    171
- Types of Processing
  171
- Using EXECIO to Process Information to and from Data Sets
  172
  - When to Use the EXECIO Command
    172
  - Using the EXECIO Command
    172
    
    Reading Information from a Data Set
    173
    
    Writing Information to a Data Set
    175
  - Return Codes from EXECIO
    177
  - When to Use the EXECIO Command
    177
    
    Copying Information from One Data Set to Another
    177
    
    Copying Information to and from a List of Compound Variables
    179
    
    Updating Information in a Data Set
    180
    
    Additional Examples
    181
  - EXECIO Example 1
    182
  - EXECIO Example 2
    182
  - EXECIO Example 3
    183
  - EXECIO Example 4
    183
  - EXECIO Example 5
    185
  - EXECIO Example 5 (Continued)
    185
  - EXECIO Example 6 (Continued)
    187
  - EXECIO Example 6
    188
  - EXECIO Example 6 (Continued)
    188
Spaces

189
- Chapter 13. Using REXX in TSO/E and Other MVS Address Spaces
  
  189
- Appendix A. Allocating Data Sets
  
  203
- Appendix B. Specifying Alternate Libraries with the ALTLIB Command
  
  213
  - Specifying Alternative Exec Libraries with the ALTLIB Command
    213
    
    Using the ALTLIB Command
    213
    
    Stacking ALTLIB Requests
    214
    
    Using ALTLIB with ISPF
    214
  - Examples of the ALTLIB Command
    214
- Appendix C. Comparisons between CLIST and REXX
  
  215
  - Accessing System Information
    216
  - Controlling Program Flow
    217
  - Debugging
    218
  - Execution
    218
  - Interactive Communication
    219
  - Passing Information
    219
  - Performing File I/O
    220
  - Syntax
    220
  - Using Functions
    221
  - Using Variables
    221
- Appendix D. Notices
  
  223
  - Programming Interface Information
    225
  - Trademarks
    225
  - Bibliography
    227
  - TSO/E Publications
    227
  - Related Publications
    227
  - Index
    229

IBM Categories

Server

Desktop

Storage

Laptop

Monitor

More IBM Manuals

IBM TSO/E REXX Manuals

IBM TSO/E REXX User Manual (242 pages)

Table of Contents

Table of Contents

Chapter 1. Introduction

Chapter 2. Writing and Running a Rexx Exec

Chapter 3. Using Variables and Expressions

Chapter 4. Controlling the Flow Within an Exec

Chapter 5. Using Functions

Chapter 6. Writing Subroutines and Functions

Chapter 7. Manipulating Data

Chapter 8. Entering Commands from an Exec

Chapter 9. Diagnosing Problems Within an Exec

Chapter 10. Using Tso/E External Functions

Chapter 11. Storing Information in the Data Stack

Chapter 12. Processing Data and Input/Output Processing

Spaces

Chapter 13. Using REXX in TSO/E and Other MVS Address Spaces

Appendix A. Allocating Data Sets

Appendix B. Specifying Alternate Libraries with the ALTLIB Command

Appendix C. Comparisons between CLIST and REXX

Appendix D. Notices

Related Products

IBM Categories