The DCL language provides the user’s basic interface with the operating system. This course presents the syntax (order of the parts) for DCL commands. It also includes discussion of the use of symbols, especially using symbols to create synonyms for often-used command forms and their use in DCL command procedures. The last part of the course builds additional awareness of the user’s OpenVMS process in its system context.

Interpreted Command Language

• Compilers
• Interpreters
• Why Interpreted Command Language

DCL Commands

• More Syntax
  • Syntax References
• Using DCL Commands
  • Command Verbs
  • Keyword Options
  • Supplying Parameters
  • Qualifying Command Elements

Exploring DCL Aids

• Getting Help
• Using Line Editing and RECALL
  • Command Line Toggles and Controls
  • Recalling Commands
  • Additional Ctrl Sequences
• Interpreting System Messages
  • Disassembling a System Message
  • Understanding Severity Levels
• Getting a Fuller Explanation for Messages

Defining Symbols

• Storing and Accessing Symbols
  • Local and Global Symbol Tables
  • Locating a Symbol
  • Naming Symbols
  • Displaying Symbols
  • Deleting Symbols
• Using Symbols in Command Procedures
  • Tailoring Your LOGIN.COM File
  • Prototype LOGIN.COM

More Process Essentials

• Picturing the Process Concept
• Scheduling Processes
  • Process States
  • Viewing Your Process State
  • An Idle Interactive Process
  • An Active Interactive Process

Sharing Physical Memory

• Balance Set
• Working Sets
• Memory Lists
  • Moving Pages
  • Flow of Pages
  • Swapping Processes
• Displaying Information About Memory