Document revision date: 15 July 2002
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OpenVMS User's Manual

Previous Contents Index

Chapter 15
15 Using Lexical Functions to Obtain and Manipulate Information
     15.1     Why Use Lexical Functions
     15.2     Obtaining Information About Your Process
         15.2.1         Changing Verification Settings
         15.2.2         Changing Default File Protection
     15.3     Obtaining Information About the System
         15.3.1         Determining Your OpenVMS Cluster Node Name
         15.3.2         Obtaining Queue Information
         15.3.3         Obtaining Process Information
         15.3.4         F$CONTEXT Lexical Function
     15.4     Obtaining Information About Files and Devices
         15.4.1         Searching for Devices
         15.4.2         Searching for a File in a Directory
         15.4.3         Deleting Old Versions of Files
     15.5     Translating Logical Names
     15.6     Manipulating Strings
         15.6.1         Determining Presence of Strings or Characters
         15.6.2         Extracting Parts of Strings
         15.6.3         Formatting Output Strings
     15.7     Manipulating Data Types
         15.7.1         Converting Data Types
         15.7.2         Evaluating Expressions
         15.7.3         Determining Whether a Symbol Exists
Chapter 16
16 Understanding Processes and Batch Jobs
     16.1     Interpreting Your Process Context
     16.2     Using Detached Processes
     16.3     Using Subprocesses
         16.3.1         Using Subprocesses to Spawn Tasks
         16.3.2         Using Subprocesses to Perform Multiple Tasks
         16.3.3         Creating a Subprocess
         16.3.4         Exiting from a Subprocess
         16.3.5         Subprocess Context
     16.4     Connecting to Disconnected Processes on Virtual Terminals
         16.4.1         Terminal Disconnections
         16.4.2         Removing Disconnected Processes
         16.4.3         Managing Disconnected Processes
     16.5     Working with Batch Jobs
         16.5.1         Submitting Batch Jobs
         16.5.2         Passing Data to Batch Jobs
         16.5.3         Control of Batch Job Output
         16.5.4         Changing Batch Job Characteristics
         16.5.5         SUBMIT Command Qualifiers
         16.5.6         Displaying Jobs in Batch Queues
         16.5.7         Deleting and Stopping Batch Jobs
         16.5.8         Restarting Batch Jobs
         16.5.9         Synchronizing Batch Job Execution
         16.5.10         Using the WAIT Command
Appendix A
Appendix A Character Sets
Appendix B
Appendix B Annotated Command Procedures
     B.1     CONVERT.COM Command Procedure
     B.2     REMINDER.COM Command Procedure
     B.3     DIR.COM Command Procedure
     B.4     SYS.COM Command Procedure
     B.5     GETPARMS.COM Command Procedure
     B.6     EDITALL.COM Command Procedure
     B.7     MAILEDIT.COM Command Procedure
     B.8     FORTUSER.COM Command Procedure
     B.9     LISTER.COM Command Procedure
     B.10     CALC.COM Command Procedure
     B.11     BATCH.COM Command Procedure
     B.12     COMPILE_FILE.COM Command Procedure
Glossary Glossary
4-1 Directory Structure
7-1 Organizing Mail
7-2 Mail Utility Keypad
8-1 EVE Keys --- VT200, VT300, and VT400 Series Terminals
8-2 EVE Keys --- VT100 Series Terminals
9-1 List Sorted in Ascending Order
9-2 Record Fields in a List
9-3 Sorting by Key Field
9-4 Sorting with Default Key Records
9-5 Sorting with Multiple Key Fields
9-6 Sorting with Multiple Key Fields (Ascending and Descending Order)
9-7 Sorting with Identical Key Fields
9-8 Output from Using a Specification File
13-1 ON Command Actions
13-2 Flow of Execution Following Ctrl/Y Action
13-3 Ctrl/Y in Nested Procedures
16-1 Synchronizing Batch Job Execution
A-1 Differences Between DEC Multinational Character Set and ISO Latin-1 Character Set
2-1 To Enter DCL Commands
2-2 To Interrupt DCL Commands
2-3 To Recall Commands
2-4 To Control Cursor Position
2-5 To Control Screen Display
3-1 Commonly Associated Language Codes and Country Codes
5-1 Sample Wildcards and Matching Patterns
5-2 Directory Names on ODS-5 Volumes
5-3 Non-Supported OpenVMS Components
7-1 MIME Utility Optional Files
8-1 EVE Editing Keys That Move the Cursor
8-2 EVE Commands That Move the Cursor
8-3 EVE Editing Keys for Erasing and Restoring Text
8-4 EVE Commands for Erasing and Restoring Text
8-5 EVE Editing Keys That Move Text
8-6 EVE Commands That Move Text
8-7 EVE Commands for Box Editing
8-8 SET BOX SELECT Commands
8-9 EVE Commands for Locating Text in a Buffer
8-10 EDIT Command Line Qualifiers
8-11 EVE Commands for Buffer-Change Journaling and Recovery
8-12 Buffer-Change Journal File Names
8-13 EVE Editing Keys and Their Functions
8-14 EVE Text Formatting Commands and Their Functions
8-15 EVE Commands to Manipulate Buffers
8-16 Keys Used with EVE Windows
8-17 EVE Window Commands
9-1 High-Performance Sort/Merge: Differences in Behavior
9-2 /KEY Qualifier Values
11-1 Default Logical Name Tables
11-2 Default Logical Names in Process Logical Name Directory
11-3 Default Logical Names in Process Logical Name Table
11-4 Default Logical Names in System Logical Name Directory
11-5 Default Logical Names in System Logical Name Table
11-6 Default Protection of Shareable Logical Name Tables
11-7 Privilege or Access Type Required for Shareable Logical Name Tasks
12-1 String Comparisons
12-2 Numeric Comparisons
A-1 DEC Multinational Character Set
A-2 DCL Character Set

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